20953550

素因数分解:

$2^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{7907}}^1$

素因数の和:7972

約数の個数: 24

約数和(自身を含む): 39713976

約数和(自身を除く): 18760426

約数列:

[1, 2, 5, 10, 25, 50, 53, 106, 265, 530, 1325, 2650, 7907, 15814, 39535, 79070, 197675, 395350, 419071, 838142, 2095355, 4190710, 10476775, 20953550]

約数ペア:

[(1, 20953550), (2, 10476775), (5, 4190710), (10, 2095355), (25, 838142), (50, 419071), (53, 395350), (106, 197675), (265, 79070), (530, 39535), (1325, 15814), (2650, 7907)]