20214640

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{6163}}^1$

素因数の和:6217

約数の個数: 40

約数和(自身を含む): 48153168

約数和(自身を除く): 27938528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 6163, 12326, 24652, 30815, 49304, 61630, 98608, 123260, 246520, 252683, 493040, 505366, 1010732, 1263415, 2021464, 2526830, 4042928, 5053660, 10107320, 20214640]

約数ペア:

[(1, 20214640), (2, 10107320), (4, 5053660), (5, 4042928), (8, 2526830), (10, 2021464), (16, 1263415), (20, 1010732), (40, 505366), (41, 493040), (80, 252683), (82, 246520), (164, 123260), (205, 98608), (328, 61630), (410, 49304), (656, 30815), (820, 24652), (1640, 12326), (3280, 6163)]