81706340

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1\times {\mathrm{787}}^1$

素因数の和:1004

約数の個数: 48

約数和(自身を含む): 178718400

約数和(自身を除く): 97012060

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 179, 290, 358, 580, 716, 787, 895, 1574, 1790, 3148, 3580, 3935, 5191, 7870, 10382, 15740, 20764, 22823, 25955, 45646, 51910, 91292, 103820, 114115, 140873, 228230, 281746, 456460, 563492, 704365, 1408730, 2817460, 4085317, 8170634, 16341268, 20426585, 40853170, 81706340]

約数ペア:

[(1, 81706340), (2, 40853170), (4, 20426585), (5, 16341268), (10, 8170634), (20, 4085317), (29, 2817460), (58, 1408730), (116, 704365), (145, 563492), (179, 456460), (290, 281746), (358, 228230), (580, 140873), (716, 114115), (787, 103820), (895, 91292), (1574, 51910), (1790, 45646), (3148, 25955), (3580, 22823), (3935, 20764), (5191, 15740), (7870, 10382)]