400681820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:185

約数の個数: 216

約数和(自身を含む): 1120775040

約数和(自身を除く): 720093220

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 31, 35, 44, 49, 55, 62, 70, 77, 98, 109, 110, 121, 124, 140, 154, 155, 196, 217, 218, 220, 242, 245, 308, 310, 341, 385, 434, 436, 484, 490, 539, 545, 605, 620, 682, 763, 770, 847, 868, 980, 1078, 1085, 1090, 1199, 1210, 1364, 1519, 1526, 1540, 1694, 1705, 2156, 2170, 2180, 2387, 2398, 2420, 2695, 3038, 3052, 3379, 3388, 3410, 3751, 3815, 4235, 4340, 4774, 4796, 5341, 5390, 5929, 5995, 6076, 6758, 6820, 7502, 7595, 7630, 8393, 8470, 9548, 10682, 10780, 11858, 11935, 11990, 13189, 13516, 15004, 15190, 15260, 16709, 16786, 16895, 16940, 18755, 21364, 23653, 23716, 23870, 23980, 26257, 26378, 26705, 29645, 30380, 33418, 33572, 33790, 37169, 37510, 41965, 47306, 47740, 52514, 52756, 53410, 58751, 59290, 65945, 66836, 67580, 74338, 75020, 83545, 83930, 92323, 94612, 105028, 106820, 117502, 118265, 118580, 131285, 131890, 148676, 165571, 167090, 167860, 183799, 184646, 185845, 235004, 236530, 260183, 262570, 263780, 293755, 331142, 334180, 367598, 369292, 371690, 408859, 461615, 473060, 520366, 525140, 587510, 646261, 662284, 735196, 743380, 817718, 827855, 918995, 923230, 1040732, 1175020, 1292522, 1300915, 1635436, 1655710, 1821281, 1837990, 1846460, 2044295, 2585044, 2601830, 2862013, 3231305, 3311420, 3642562, 3675980, 4088590, 5203660, 5724026, 6462610, 7285124, 8177180, 9106405, 11448052, 12925220, 14310065, 18212810, 20034091, 28620130, 36425620, 40068182, 57240260, 80136364, 100170455, 200340910, 400681820]

約数ペア:

[(1, 400681820), (2, 200340910), (4, 100170455), (5, 80136364), (7, 57240260), (10, 40068182), (11, 36425620), (14, 28620130), (20, 20034091), (22, 18212810), (28, 14310065), (31, 12925220), (35, 11448052), (44, 9106405), (49, 8177180), (55, 7285124), (62, 6462610), (70, 5724026), (77, 5203660), (98, 4088590), (109, 3675980), (110, 3642562), (121, 3311420), (124, 3231305), (140, 2862013), (154, 2601830), (155, 2585044), (196, 2044295), (217, 1846460), (218, 1837990), (220, 1821281), (242, 1655710), (245, 1635436), (308, 1300915), (310, 1292522), (341, 1175020), (385, 1040732), (434, 923230), (436, 918995), (484, 827855), (490, 817718), (539, 743380), (545, 735196), (605, 662284), (620, 646261), (682, 587510), (763, 525140), (770, 520366), (847, 473060), (868, 461615), (980, 408859), (1078, 371690), (1085, 369292), (1090, 367598), (1199, 334180), (1210, 331142), (1364, 293755), (1519, 263780), (1526, 262570), (1540, 260183), (1694, 236530), (1705, 235004), (2156, 185845), (2170, 184646), (2180, 183799), (2387, 167860), (2398, 167090), (2420, 165571), (2695, 148676), (3038, 131890), (3052, 131285), (3379, 118580), (3388, 118265), (3410, 117502), (3751, 106820), (3815, 105028), (4235, 94612), (4340, 92323), (4774, 83930), (4796, 83545), (5341, 75020), (5390, 74338), (5929, 67580), (5995, 66836), (6076, 65945), (6758, 59290), (6820, 58751), (7502, 53410), (7595, 52756), (7630, 52514), (8393, 47740), (8470, 47306), (9548, 41965), (10682, 37510), (10780, 37169), (11858, 33790), (11935, 33572), (11990, 33418), (13189, 30380), (13516, 29645), (15004, 26705), (15190, 26378), (15260, 26257), (16709, 23980), (16786, 23870), (16895, 23716), (16940, 23653), (18755, 21364)]