66905920

素因数分解:

$2^6\times 5^1\times {\mathrm{419}}^1\times {\mathrm{499}}^1$

素因数の和:935

約数の個数: 56

約数和(自身を含む): 160020000

約数和(自身を除く): 93114080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 419, 499, 838, 998, 1676, 1996, 2095, 2495, 3352, 3992, 4190, 4990, 6704, 7984, 8380, 9980, 13408, 15968, 16760, 19960, 26816, 31936, 33520, 39920, 67040, 79840, 134080, 159680, 209081, 418162, 836324, 1045405, 1672648, 2090810, 3345296, 4181620, 6690592, 8363240, 13381184, 16726480, 33452960, 66905920]

約数ペア:

[(1, 66905920), (2, 33452960), (4, 16726480), (5, 13381184), (8, 8363240), (10, 6690592), (16, 4181620), (20, 3345296), (32, 2090810), (40, 1672648), (64, 1045405), (80, 836324), (160, 418162), (320, 209081), (419, 159680), (499, 134080), (838, 79840), (998, 67040), (1676, 39920), (1996, 33520), (2095, 31936), (2495, 26816), (3352, 19960), (3992, 16760), (4190, 15968), (4990, 13408), (6704, 9980), (7984, 8380)]