28195160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{997}}^1$

素因数の和:1116

約数の個数: 64

約数和(自身を含む): 73293120

約数和(自身を除く): 45097960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 101, 140, 202, 280, 404, 505, 707, 808, 997, 1010, 1414, 1994, 2020, 2828, 3535, 3988, 4040, 4985, 5656, 6979, 7070, 7976, 9970, 13958, 14140, 19940, 27916, 28280, 34895, 39880, 55832, 69790, 100697, 139580, 201394, 279160, 402788, 503485, 704879, 805576, 1006970, 1409758, 2013940, 2819516, 3524395, 4027880, 5639032, 7048790, 14097580, 28195160]

約数ペア:

[(1, 28195160), (2, 14097580), (4, 7048790), (5, 5639032), (7, 4027880), (8, 3524395), (10, 2819516), (14, 2013940), (20, 1409758), (28, 1006970), (35, 805576), (40, 704879), (56, 503485), (70, 402788), (101, 279160), (140, 201394), (202, 139580), (280, 100697), (404, 69790), (505, 55832), (707, 39880), (808, 34895), (997, 28280), (1010, 27916), (1414, 19940), (1994, 14140), (2020, 13958), (2828, 9970), (3535, 7976), (3988, 7070), (4040, 6979), (4985, 5656)]