18498520

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{431}}^1$

素因数の和:508

約数の個数: 64

約数和(自身を含む): 44323200

約数和(自身を除く): 25824680

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 37, 40, 58, 74, 116, 145, 148, 185, 232, 290, 296, 370, 431, 580, 740, 862, 1073, 1160, 1480, 1724, 2146, 2155, 3448, 4292, 4310, 5365, 8584, 8620, 10730, 12499, 15947, 17240, 21460, 24998, 31894, 42920, 49996, 62495, 63788, 79735, 99992, 124990, 127576, 159470, 249980, 318940, 462463, 499960, 637880, 924926, 1849852, 2312315, 3699704, 4624630, 9249260, 18498520]

約数ペア:

[(1, 18498520), (2, 9249260), (4, 4624630), (5, 3699704), (8, 2312315), (10, 1849852), (20, 924926), (29, 637880), (37, 499960), (40, 462463), (58, 318940), (74, 249980), (116, 159470), (145, 127576), (148, 124990), (185, 99992), (232, 79735), (290, 63788), (296, 62495), (370, 49996), (431, 42920), (580, 31894), (740, 24998), (862, 21460), (1073, 17240), (1160, 15947), (1480, 12499), (1724, 10730), (2146, 8620), (2155, 8584), (3448, 5365), (4292, 4310)]