20498580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2423}}^1$

素因数の和:2485

約数の個数: 72

約数和(自身を含む): 63528192

約数和(自身を除く): 43029612

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 47, 60, 90, 94, 141, 180, 188, 235, 282, 423, 470, 564, 705, 846, 940, 1410, 1692, 2115, 2423, 2820, 4230, 4846, 7269, 8460, 9692, 12115, 14538, 21807, 24230, 29076, 36345, 43614, 48460, 72690, 87228, 109035, 113881, 145380, 218070, 227762, 341643, 436140, 455524, 569405, 683286, 1024929, 1138810, 1366572, 1708215, 2049858, 2277620, 3416430, 4099716, 5124645, 6832860, 10249290, 20498580]

約数ペア:

[(1, 20498580), (2, 10249290), (3, 6832860), (4, 5124645), (5, 4099716), (6, 3416430), (9, 2277620), (10, 2049858), (12, 1708215), (15, 1366572), (18, 1138810), (20, 1024929), (30, 683286), (36, 569405), (45, 455524), (47, 436140), (60, 341643), (90, 227762), (94, 218070), (141, 145380), (180, 113881), (188, 109035), (235, 87228), (282, 72690), (423, 48460), (470, 43614), (564, 36345), (705, 29076), (846, 24230), (940, 21807), (1410, 14538), (1692, 12115), (2115, 9692), (2423, 8460), (2820, 7269), (4230, 4846)]