18988680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{229}}^1\times {\mathrm{691}}^1$

素因数の和:934

約数の個数: 64

約数和(自身を含む): 57297600

約数和(自身を除く): 38308920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 229, 458, 687, 691, 916, 1145, 1374, 1382, 1832, 2073, 2290, 2748, 2764, 3435, 3455, 4146, 4580, 5496, 5528, 6870, 6910, 8292, 9160, 10365, 13740, 13820, 16584, 20730, 27480, 27640, 41460, 82920, 158239, 316478, 474717, 632956, 791195, 949434, 1265912, 1582390, 1898868, 2373585, 3164780, 3797736, 4747170, 6329560, 9494340, 18988680]

約数ペア:

[(1, 18988680), (2, 9494340), (3, 6329560), (4, 4747170), (5, 3797736), (6, 3164780), (8, 2373585), (10, 1898868), (12, 1582390), (15, 1265912), (20, 949434), (24, 791195), (30, 632956), (40, 474717), (60, 316478), (120, 158239), (229, 82920), (458, 41460), (687, 27640), (691, 27480), (916, 20730), (1145, 16584), (1374, 13820), (1382, 13740), (1832, 10365), (2073, 9160), (2290, 8292), (2748, 6910), (2764, 6870), (3435, 5528), (3455, 5496), (4146, 4580)]