20888980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7853}}^1$

素因数の和:7888

約数の個数: 48

約数和(自身を含む): 52778880

約数和(自身を除く): 31889900

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7853, 15706, 31412, 39265, 54971, 78530, 109942, 149207, 157060, 219884, 274855, 298414, 549710, 596828, 746035, 1044449, 1099420, 1492070, 2088898, 2984140, 4177796, 5222245, 10444490, 20888980]

約数ペア:

[(1, 20888980), (2, 10444490), (4, 5222245), (5, 4177796), (7, 2984140), (10, 2088898), (14, 1492070), (19, 1099420), (20, 1044449), (28, 746035), (35, 596828), (38, 549710), (70, 298414), (76, 274855), (95, 219884), (133, 157060), (140, 149207), (190, 109942), (266, 78530), (380, 54971), (532, 39265), (665, 31412), (1330, 15706), (2660, 7853)]