18478120

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7573}}^1$

素因数の和:7645

約数の個数: 32

約数和(自身を含む): 42262920

約数和(自身を除く): 23784800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 7573, 15146, 30292, 37865, 60584, 75730, 151460, 302920, 461953, 923906, 1847812, 2309765, 3695624, 4619530, 9239060, 18478120]

約数ペア:

[(1, 18478120), (2, 9239060), (4, 4619530), (5, 3695624), (8, 2309765), (10, 1847812), (20, 923906), (40, 461953), (61, 302920), (122, 151460), (244, 75730), (305, 60584), (488, 37865), (610, 30292), (1220, 15146), (2440, 7573)]