64720840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{85159}}^1$

素因数の和:85189

約数の個数: 32

約数和(自身を含む): 153288000

約数和(自身を除く): 88567160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 85159, 170318, 340636, 425795, 681272, 851590, 1618021, 1703180, 3236042, 3406360, 6472084, 8090105, 12944168, 16180210, 32360420, 64720840]

約数ペア:

[(1, 64720840), (2, 32360420), (4, 16180210), (5, 12944168), (8, 8090105), (10, 6472084), (19, 3406360), (20, 3236042), (38, 1703180), (40, 1618021), (76, 851590), (95, 681272), (152, 425795), (190, 340636), (380, 170318), (760, 85159)]