20472680

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3907}}^1$

素因数の和:4049

約数の個数: 32

約数和(自身を含む): 46427040

約数和(自身を除く): 25954360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3907, 5240, 7814, 15628, 19535, 31256, 39070, 78140, 156280, 511817, 1023634, 2047268, 2559085, 4094536, 5118170, 10236340, 20472680]

約数ペア:

[(1, 20472680), (2, 10236340), (4, 5118170), (5, 4094536), (8, 2559085), (10, 2047268), (20, 1023634), (40, 511817), (131, 156280), (262, 78140), (524, 39070), (655, 31256), (1048, 19535), (1310, 15628), (2620, 7814), (3907, 5240)]