78752540

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{151}}^1\times {\mathrm{293}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 168920640

約数和(自身を除く): 90168100

約数列:

[1, 2, 4, 5, 10, 20, 89, 151, 178, 293, 302, 356, 445, 586, 604, 755, 890, 1172, 1465, 1510, 1780, 2930, 3020, 5860, 13439, 26077, 26878, 44243, 52154, 53756, 67195, 88486, 104308, 130385, 134390, 176972, 221215, 260770, 268780, 442430, 521540, 884860, 3937627, 7875254, 15750508, 19688135, 39376270, 78752540]

約数ペア:

[(1, 78752540), (2, 39376270), (4, 19688135), (5, 15750508), (10, 7875254), (20, 3937627), (89, 884860), (151, 521540), (178, 442430), (293, 268780), (302, 260770), (356, 221215), (445, 176972), (586, 134390), (604, 130385), (755, 104308), (890, 88486), (1172, 67195), (1465, 53756), (1510, 52154), (1780, 44243), (2930, 26878), (3020, 26077), (5860, 13439)]