81623240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{509}}^1$

素因数の和:750

約数の個数: 64

約数和(自身を含む): 194616000

約数和(自身を除く): 112992760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 211, 380, 422, 509, 760, 844, 1018, 1055, 1688, 2036, 2110, 2545, 4009, 4072, 4220, 5090, 8018, 8440, 9671, 10180, 16036, 19342, 20045, 20360, 32072, 38684, 40090, 48355, 77368, 80180, 96710, 107399, 160360, 193420, 214798, 386840, 429596, 536995, 859192, 1073990, 2040581, 2147980, 4081162, 4295960, 8162324, 10202905, 16324648, 20405810, 40811620, 81623240]

約数ペア:

[(1, 81623240), (2, 40811620), (4, 20405810), (5, 16324648), (8, 10202905), (10, 8162324), (19, 4295960), (20, 4081162), (38, 2147980), (40, 2040581), (76, 1073990), (95, 859192), (152, 536995), (190, 429596), (211, 386840), (380, 214798), (422, 193420), (509, 160360), (760, 107399), (844, 96710), (1018, 80180), (1055, 77368), (1688, 48355), (2036, 40090), (2110, 38684), (2545, 32072), (4009, 20360), (4072, 20045), (4220, 19342), (5090, 16036), (8018, 10180), (8440, 9671)]