18209475

素因数分解:

$3^3\times 5^2\times {\mathrm{53}}^1\times {\mathrm{509}}^1$

素因数の和:581

約数の個数: 48

約数和(自身を含む): 34149600

約数和(自身を除く): 15940125

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 53, 75, 135, 159, 225, 265, 477, 509, 675, 795, 1325, 1431, 1527, 2385, 2545, 3975, 4581, 7155, 7635, 11925, 12725, 13743, 22905, 26977, 35775, 38175, 68715, 80931, 114525, 134885, 242793, 343575, 404655, 674425, 728379, 1213965, 2023275, 3641895, 6069825, 18209475]

約数ペア:

[(1, 18209475), (3, 6069825), (5, 3641895), (9, 2023275), (15, 1213965), (25, 728379), (27, 674425), (45, 404655), (53, 343575), (75, 242793), (135, 134885), (159, 114525), (225, 80931), (265, 68715), (477, 38175), (509, 35775), (675, 26977), (795, 22905), (1325, 13743), (1431, 12725), (1527, 11925), (2385, 7635), (2545, 7155), (3975, 4581)]