20457675

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:473

約数の個数: 72

約数和(自身を含む): 43330560

約数和(自身を除く): 22872885

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 31, 35, 45, 63, 75, 93, 105, 155, 175, 217, 225, 279, 315, 419, 465, 525, 651, 775, 1085, 1257, 1395, 1575, 1953, 2095, 2325, 2933, 3255, 3771, 5425, 6285, 6975, 8799, 9765, 10475, 12989, 14665, 16275, 18855, 26397, 31425, 38967, 43995, 48825, 64945, 73325, 90923, 94275, 116901, 131985, 194835, 219975, 272769, 324725, 454615, 584505, 659925, 818307, 974175, 1363845, 2273075, 2922525, 4091535, 6819225, 20457675]

約数ペア:

[(1, 20457675), (3, 6819225), (5, 4091535), (7, 2922525), (9, 2273075), (15, 1363845), (21, 974175), (25, 818307), (31, 659925), (35, 584505), (45, 454615), (63, 324725), (75, 272769), (93, 219975), (105, 194835), (155, 131985), (175, 116901), (217, 94275), (225, 90923), (279, 73325), (315, 64945), (419, 48825), (465, 43995), (525, 38967), (651, 31425), (775, 26397), (1085, 18855), (1257, 16275), (1395, 14665), (1575, 12989), (1953, 10475), (2095, 9765), (2325, 8799), (2933, 6975), (3255, 6285), (3771, 5425)]