18996900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{4871}}^1$

素因数の和:4901

約数の個数: 72

約数和(自身を含む): 59204544

約数和(自身を除く): 40207644

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 4871, 9742, 14613, 19484, 24355, 29226, 48710, 58452, 63323, 73065, 97420, 121775, 126646, 146130, 189969, 243550, 253292, 292260, 316615, 365325, 379938, 487100, 633230, 730650, 759876, 949845, 1266460, 1461300, 1583075, 1899690, 3166150, 3799380, 4749225, 6332300, 9498450, 18996900]

約数ペア:

[(1, 18996900), (2, 9498450), (3, 6332300), (4, 4749225), (5, 3799380), (6, 3166150), (10, 1899690), (12, 1583075), (13, 1461300), (15, 1266460), (20, 949845), (25, 759876), (26, 730650), (30, 633230), (39, 487100), (50, 379938), (52, 365325), (60, 316615), (65, 292260), (75, 253292), (78, 243550), (100, 189969), (130, 146130), (150, 126646), (156, 121775), (195, 97420), (260, 73065), (300, 63323), (325, 58452), (390, 48710), (650, 29226), (780, 24355), (975, 19484), (1300, 14613), (1950, 9742), (3900, 4871)]