80973820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{521}}^1$

素因数の和:958

約数の個数: 48

約数和(自身を含む): 179776800

約数和(自身を除く): 98802980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 409, 521, 818, 1042, 1636, 2045, 2084, 2605, 4090, 5210, 7771, 8180, 9899, 10420, 15542, 19798, 31084, 38855, 39596, 49495, 77710, 98990, 155420, 197980, 213089, 426178, 852356, 1065445, 2130890, 4048691, 4261780, 8097382, 16194764, 20243455, 40486910, 80973820]

約数ペア:

[(1, 80973820), (2, 40486910), (4, 20243455), (5, 16194764), (10, 8097382), (19, 4261780), (20, 4048691), (38, 2130890), (76, 1065445), (95, 852356), (190, 426178), (380, 213089), (409, 197980), (521, 155420), (818, 98990), (1042, 77710), (1636, 49495), (2045, 39596), (2084, 38855), (2605, 31084), (4090, 19798), (5210, 15542), (7771, 10420), (8180, 9899)]