2445520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1$

素因数の和:428

約数の個数: 80

約数和(自身を含む): 7106688

約数和(自身を除く): 4661168

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 397, 440, 560, 616, 770, 794, 880, 1232, 1540, 1588, 1985, 2779, 3080, 3176, 3970, 4367, 5558, 6160, 6352, 7940, 8734, 11116, 13895, 15880, 17468, 21835, 22232, 27790, 30569, 31760, 34936, 43670, 44464, 55580, 61138, 69872, 87340, 111160, 122276, 152845, 174680, 222320, 244552, 305690, 349360, 489104, 611380, 1222760, 2445520]

約数ペア:

[(1, 2445520), (2, 1222760), (4, 611380), (5, 489104), (7, 349360), (8, 305690), (10, 244552), (11, 222320), (14, 174680), (16, 152845), (20, 122276), (22, 111160), (28, 87340), (35, 69872), (40, 61138), (44, 55580), (55, 44464), (56, 43670), (70, 34936), (77, 31760), (80, 30569), (88, 27790), (110, 22232), (112, 21835), (140, 17468), (154, 15880), (176, 13895), (220, 11116), (280, 8734), (308, 7940), (385, 6352), (397, 6160), (440, 5558), (560, 4367), (616, 3970), (770, 3176), (794, 3080), (880, 2779), (1232, 1985), (1540, 1588)]