51205720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{31223}}^1$

素因数の和:31275

約数の個数: 32

約数和(自身を含む): 118026720

約数和(自身を除く): 66821000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 31223, 62446, 124892, 156115, 249784, 312230, 624460, 1248920, 1280143, 2560286, 5120572, 6400715, 10241144, 12801430, 25602860, 51205720]

約数ペア:

[(1, 51205720), (2, 25602860), (4, 12801430), (5, 10241144), (8, 6400715), (10, 5120572), (20, 2560286), (40, 1280143), (41, 1248920), (82, 624460), (164, 312230), (205, 249784), (328, 156115), (410, 124892), (820, 62446), (1640, 31223)]