20278650

素因数分解:

$2^1\times 3^1\times 5^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:149

約数の個数: 144

約数和(自身を含む): 61067520

約数和(自身を除く): 40788870

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 31, 35, 42, 49, 50, 62, 70, 75, 89, 93, 98, 105, 147, 150, 155, 175, 178, 186, 210, 217, 245, 267, 294, 310, 350, 434, 445, 465, 490, 525, 534, 623, 651, 735, 775, 890, 930, 1050, 1085, 1225, 1246, 1302, 1335, 1470, 1519, 1550, 1869, 2170, 2225, 2325, 2450, 2670, 2759, 3038, 3115, 3255, 3675, 3738, 4361, 4450, 4557, 4650, 5425, 5518, 6230, 6510, 6675, 7350, 7595, 8277, 8722, 9114, 9345, 10850, 13083, 13350, 13795, 15190, 15575, 16275, 16554, 18690, 19313, 21805, 22785, 26166, 27590, 31150, 32550, 37975, 38626, 41385, 43610, 45570, 46725, 57939, 65415, 68975, 75950, 82770, 93450, 96565, 109025, 113925, 115878, 130830, 135191, 137950, 193130, 206925, 218050, 227850, 270382, 289695, 327075, 405573, 413850, 482825, 579390, 654150, 675955, 811146, 965650, 1351910, 1448475, 2027865, 2896950, 3379775, 4055730, 6759550, 10139325, 20278650]

約数ペア:

[(1, 20278650), (2, 10139325), (3, 6759550), (5, 4055730), (6, 3379775), (7, 2896950), (10, 2027865), (14, 1448475), (15, 1351910), (21, 965650), (25, 811146), (30, 675955), (31, 654150), (35, 579390), (42, 482825), (49, 413850), (50, 405573), (62, 327075), (70, 289695), (75, 270382), (89, 227850), (93, 218050), (98, 206925), (105, 193130), (147, 137950), (150, 135191), (155, 130830), (175, 115878), (178, 113925), (186, 109025), (210, 96565), (217, 93450), (245, 82770), (267, 75950), (294, 68975), (310, 65415), (350, 57939), (434, 46725), (445, 45570), (465, 43610), (490, 41385), (525, 38626), (534, 37975), (623, 32550), (651, 31150), (735, 27590), (775, 26166), (890, 22785), (930, 21805), (1050, 19313), (1085, 18690), (1225, 16554), (1246, 16275), (1302, 15575), (1335, 15190), (1470, 13795), (1519, 13350), (1550, 13083), (1869, 10850), (2170, 9345), (2225, 9114), (2325, 8722), (2450, 8277), (2670, 7595), (2759, 7350), (3038, 6675), (3115, 6510), (3255, 6230), (3675, 5518), (3738, 5425), (4361, 4650), (4450, 4557)]