20218649840

素因数分解:

$2^4\times 5^1\times {\mathrm{773}}^1\times {\mathrm{326951}}^1$

素因数の和:327737

約数の個数: 40

約数和(自身を含む): 47069317728

約数和(自身を除く): 26850667888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 773, 1546, 3092, 3865, 6184, 7730, 12368, 15460, 30920, 61840, 326951, 653902, 1307804, 1634755, 2615608, 3269510, 5231216, 6539020, 13078040, 26156080, 252733123, 505466246, 1010932492, 1263665615, 2021864984, 2527331230, 4043729968, 5054662460, 10109324920, 20218649840]

約数ペア:

[(1, 20218649840), (2, 10109324920), (4, 5054662460), (5, 4043729968), (8, 2527331230), (10, 2021864984), (16, 1263665615), (20, 1010932492), (40, 505466246), (80, 252733123), (773, 26156080), (1546, 13078040), (3092, 6539020), (3865, 5231216), (6184, 3269510), (7730, 2615608), (12368, 1634755), (15460, 1307804), (30920, 653902), (61840, 326951)]