18506180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:285

約数の個数: 96

約数和(自身を含む): 49496832

約数和(自身を除く): 30990652

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 61, 70, 77, 110, 122, 140, 154, 197, 220, 244, 305, 308, 385, 394, 427, 610, 671, 770, 788, 854, 985, 1220, 1342, 1379, 1540, 1708, 1970, 2135, 2167, 2684, 2758, 3355, 3940, 4270, 4334, 4697, 5516, 6710, 6895, 8540, 8668, 9394, 10835, 12017, 13420, 13790, 15169, 18788, 21670, 23485, 24034, 27580, 30338, 43340, 46970, 48068, 60085, 60676, 75845, 84119, 93940, 120170, 132187, 151690, 168238, 240340, 264374, 303380, 336476, 420595, 528748, 660935, 841190, 925309, 1321870, 1682380, 1850618, 2643740, 3701236, 4626545, 9253090, 18506180]

約数ペア:

[(1, 18506180), (2, 9253090), (4, 4626545), (5, 3701236), (7, 2643740), (10, 1850618), (11, 1682380), (14, 1321870), (20, 925309), (22, 841190), (28, 660935), (35, 528748), (44, 420595), (55, 336476), (61, 303380), (70, 264374), (77, 240340), (110, 168238), (122, 151690), (140, 132187), (154, 120170), (197, 93940), (220, 84119), (244, 75845), (305, 60676), (308, 60085), (385, 48068), (394, 46970), (427, 43340), (610, 30338), (671, 27580), (770, 24034), (788, 23485), (854, 21670), (985, 18788), (1220, 15169), (1342, 13790), (1379, 13420), (1540, 12017), (1708, 10835), (1970, 9394), (2135, 8668), (2167, 8540), (2684, 6895), (2758, 6710), (3355, 5516), (3940, 4697), (4270, 4334)]