131640440

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{53951}}^1$

素因数の和:54023

約数の個数: 32

約数和(自身を含む): 301052160

約数和(自身を除く): 169411720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 53951, 107902, 215804, 269755, 431608, 539510, 1079020, 2158040, 3291011, 6582022, 13164044, 16455055, 26328088, 32910110, 65820220, 131640440]

約数ペア:

[(1, 131640440), (2, 65820220), (4, 32910110), (5, 26328088), (8, 16455055), (10, 13164044), (20, 6582022), (40, 3291011), (61, 2158040), (122, 1079020), (244, 539510), (305, 431608), (488, 269755), (610, 215804), (1220, 107902), (2440, 53951)]