20542968340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{478411}}^1$

素因数の和:478552

約数の個数: 48

約数和(自身を含む): 45812733120

約数和(自身を除く): 25269764780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 113, 190, 226, 380, 452, 565, 1130, 2147, 2260, 4294, 8588, 10735, 21470, 42940, 478411, 956822, 1913644, 2392055, 4784110, 9089809, 9568220, 18179618, 36359236, 45449045, 54060443, 90898090, 108120886, 181796180, 216241772, 270302215, 540604430, 1027148417, 1081208860, 2054296834, 4108593668, 5135742085, 10271484170, 20542968340]

約数ペア:

[(1, 20542968340), (2, 10271484170), (4, 5135742085), (5, 4108593668), (10, 2054296834), (19, 1081208860), (20, 1027148417), (38, 540604430), (76, 270302215), (95, 216241772), (113, 181796180), (190, 108120886), (226, 90898090), (380, 54060443), (452, 45449045), (565, 36359236), (1130, 18179618), (2147, 9568220), (2260, 9089809), (4294, 4784110), (8588, 2392055), (10735, 1913644), (21470, 956822), (42940, 478411)]