20920900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:75

約数の個数: 216

約数和(自身を含む): 64648640

約数和(自身を除く): 43727740

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 19, 20, 22, 25, 26, 28, 35, 38, 44, 50, 52, 55, 65, 70, 76, 77, 91, 95, 100, 110, 121, 130, 133, 140, 143, 154, 175, 182, 190, 209, 220, 242, 247, 260, 266, 275, 286, 308, 325, 350, 364, 380, 385, 418, 455, 475, 484, 494, 532, 550, 572, 605, 650, 665, 700, 715, 770, 836, 847, 910, 950, 988, 1001, 1045, 1100, 1210, 1235, 1300, 1330, 1430, 1463, 1540, 1573, 1694, 1729, 1820, 1900, 1925, 2002, 2090, 2275, 2299, 2420, 2470, 2660, 2717, 2860, 2926, 3025, 3146, 3325, 3388, 3458, 3575, 3850, 4004, 4180, 4235, 4550, 4598, 4940, 5005, 5225, 5434, 5852, 6050, 6175, 6292, 6650, 6916, 7150, 7315, 7700, 7865, 8470, 8645, 9100, 9196, 10010, 10450, 10868, 11011, 11495, 12100, 12350, 13300, 13585, 14300, 14630, 15730, 16093, 16940, 17290, 19019, 20020, 20900, 21175, 22022, 22990, 24700, 25025, 27170, 29260, 29887, 31460, 32186, 34580, 36575, 38038, 39325, 42350, 43225, 44044, 45980, 50050, 54340, 55055, 57475, 59774, 64372, 67925, 73150, 76076, 78650, 80465, 84700, 86450, 95095, 100100, 110110, 114950, 119548, 135850, 146300, 149435, 157300, 160930, 172900, 190190, 209209, 220220, 229900, 271700, 275275, 298870, 321860, 380380, 402325, 418418, 475475, 550550, 597740, 747175, 804650, 836836, 950950, 1046045, 1101100, 1494350, 1609300, 1901900, 2092090, 2988700, 4184180, 5230225, 10460450, 20920900]

約数ペア:

[(1, 20920900), (2, 10460450), (4, 5230225), (5, 4184180), (7, 2988700), (10, 2092090), (11, 1901900), (13, 1609300), (14, 1494350), (19, 1101100), (20, 1046045), (22, 950950), (25, 836836), (26, 804650), (28, 747175), (35, 597740), (38, 550550), (44, 475475), (50, 418418), (52, 402325), (55, 380380), (65, 321860), (70, 298870), (76, 275275), (77, 271700), (91, 229900), (95, 220220), (100, 209209), (110, 190190), (121, 172900), (130, 160930), (133, 157300), (140, 149435), (143, 146300), (154, 135850), (175, 119548), (182, 114950), (190, 110110), (209, 100100), (220, 95095), (242, 86450), (247, 84700), (260, 80465), (266, 78650), (275, 76076), (286, 73150), (308, 67925), (325, 64372), (350, 59774), (364, 57475), (380, 55055), (385, 54340), (418, 50050), (455, 45980), (475, 44044), (484, 43225), (494, 42350), (532, 39325), (550, 38038), (572, 36575), (605, 34580), (650, 32186), (665, 31460), (700, 29887), (715, 29260), (770, 27170), (836, 25025), (847, 24700), (910, 22990), (950, 22022), (988, 21175), (1001, 20900), (1045, 20020), (1100, 19019), (1210, 17290), (1235, 16940), (1300, 16093), (1330, 15730), (1430, 14630), (1463, 14300), (1540, 13585), (1573, 13300), (1694, 12350), (1729, 12100), (1820, 11495), (1900, 11011), (1925, 10868), (2002, 10450), (2090, 10010), (2275, 9196), (2299, 9100), (2420, 8645), (2470, 8470), (2660, 7865), (2717, 7700), (2860, 7315), (2926, 7150), (3025, 6916), (3146, 6650), (3325, 6292), (3388, 6175), (3458, 6050), (3575, 5852), (3850, 5434), (4004, 5225), (4180, 5005), (4235, 4940), (4550, 4598)]