128230780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{353}}^1\times {\mathrm{443}}^1$

素因数の和:846

約数の個数: 48

約数和(自身を含む): 277258464

約数和(自身を除く): 149027684

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 353, 410, 443, 706, 820, 886, 1412, 1765, 1772, 2215, 3530, 4430, 7060, 8860, 14473, 18163, 28946, 36326, 57892, 72365, 72652, 90815, 144730, 156379, 181630, 289460, 312758, 363260, 625516, 781895, 1563790, 3127580, 6411539, 12823078, 25646156, 32057695, 64115390, 128230780]

約数ペア:

[(1, 128230780), (2, 64115390), (4, 32057695), (5, 25646156), (10, 12823078), (20, 6411539), (41, 3127580), (82, 1563790), (164, 781895), (205, 625516), (353, 363260), (410, 312758), (443, 289460), (706, 181630), (820, 156379), (886, 144730), (1412, 90815), (1765, 72652), (1772, 72365), (2215, 57892), (3530, 36326), (4430, 28946), (7060, 18163), (8860, 14473)]