81878128

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{211}}^1\times {\mathrm{307}}^1$

素因数の和:605

約数の個数: 40

約数和(自身を含む): 161934080

約数和(自身を除く): 80055952

約数列:

[1, 2, 4, 8, 16, 79, 158, 211, 307, 316, 422, 614, 632, 844, 1228, 1264, 1688, 2456, 3376, 4912, 16669, 24253, 33338, 48506, 64777, 66676, 97012, 129554, 133352, 194024, 259108, 266704, 388048, 518216, 1036432, 5117383, 10234766, 20469532, 40939064, 81878128]

約数ペア:

[(1, 81878128), (2, 40939064), (4, 20469532), (8, 10234766), (16, 5117383), (79, 1036432), (158, 518216), (211, 388048), (307, 266704), (316, 259108), (422, 194024), (614, 133352), (632, 129554), (844, 97012), (1228, 66676), (1264, 64777), (1688, 48506), (2456, 33338), (3376, 24253), (4912, 16669)]