20474980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14419}}^1$

素因数の和:14499

約数の個数: 24

約数和(自身を含む): 43606080

約数和(自身を除く): 23131100

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14419, 28838, 57676, 72095, 144190, 288380, 1023749, 2047498, 4094996, 5118745, 10237490, 20474980]

約数ペア:

[(1, 20474980), (2, 10237490), (4, 5118745), (5, 4094996), (10, 2047498), (20, 1023749), (71, 288380), (142, 144190), (284, 72095), (355, 57676), (710, 28838), (1420, 14419)]