71883640

素因数分解:

$2^3\times 5^1\times {\mathrm{419}}^1\times {\mathrm{4289}}^1$

素因数の和:4719

約数の個数: 32

約数和(自身を含む): 162162000

約数和(自身を除く): 90278360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 419, 838, 1676, 2095, 3352, 4190, 4289, 8380, 8578, 16760, 17156, 21445, 34312, 42890, 85780, 171560, 1797091, 3594182, 7188364, 8985455, 14376728, 17970910, 35941820, 71883640]

約数ペア:

[(1, 71883640), (2, 35941820), (4, 17970910), (5, 14376728), (8, 8985455), (10, 7188364), (20, 3594182), (40, 1797091), (419, 171560), (838, 85780), (1676, 42890), (2095, 34312), (3352, 21445), (4190, 17156), (4289, 16760), (8380, 8578)]