40020640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22739}}^1$

素因数の和:22765

約数の個数: 48

約数和(自身を含む): 103148640

約数和(自身を除く): 63128000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 22739, 45478, 90956, 113695, 181912, 227390, 250129, 363824, 454780, 500258, 727648, 909560, 1000516, 1250645, 1819120, 2001032, 2501290, 3638240, 4002064, 5002580, 8004128, 10005160, 20010320, 40020640]

約数ペア:

[(1, 40020640), (2, 20010320), (4, 10005160), (5, 8004128), (8, 5002580), (10, 4002064), (11, 3638240), (16, 2501290), (20, 2001032), (22, 1819120), (32, 1250645), (40, 1000516), (44, 909560), (55, 727648), (80, 500258), (88, 454780), (110, 363824), (160, 250129), (176, 227390), (220, 181912), (352, 113695), (440, 90956), (880, 45478), (1760, 22739)]