81380344

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:284

約数の個数: 64

約数和(自身を含む): 166953600

約数和(自身を除く): 85573256

約数列:

[1, 2, 4, 8, 19, 38, 61, 67, 76, 122, 131, 134, 152, 244, 262, 268, 488, 524, 536, 1048, 1159, 1273, 2318, 2489, 2546, 4087, 4636, 4978, 5092, 7991, 8174, 8777, 9272, 9956, 10184, 15982, 16348, 17554, 19912, 31964, 32696, 35108, 63928, 70216, 77653, 151829, 155306, 166763, 303658, 310612, 333526, 535397, 607316, 621224, 667052, 1070794, 1214632, 1334104, 2141588, 4283176, 10172543, 20345086, 40690172, 81380344]

約数ペア:

[(1, 81380344), (2, 40690172), (4, 20345086), (8, 10172543), (19, 4283176), (38, 2141588), (61, 1334104), (67, 1214632), (76, 1070794), (122, 667052), (131, 621224), (134, 607316), (152, 535397), (244, 333526), (262, 310612), (268, 303658), (488, 166763), (524, 155306), (536, 151829), (1048, 77653), (1159, 70216), (1273, 63928), (2318, 35108), (2489, 32696), (2546, 31964), (4087, 19912), (4636, 17554), (4978, 16348), (5092, 15982), (7991, 10184), (8174, 9956), (8777, 9272)]