31890640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{179}}^1$

素因数の和:340

約数の個数: 80

約数和(自身を含む): 79548480

約数和(自身を除く): 47657840

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 131, 136, 170, 179, 262, 272, 340, 358, 524, 655, 680, 716, 895, 1048, 1310, 1360, 1432, 1790, 2096, 2227, 2620, 2864, 3043, 3580, 4454, 5240, 6086, 7160, 8908, 10480, 11135, 12172, 14320, 15215, 17816, 22270, 23449, 24344, 30430, 35632, 44540, 46898, 48688, 60860, 89080, 93796, 117245, 121720, 178160, 187592, 234490, 243440, 375184, 398633, 468980, 797266, 937960, 1594532, 1875920, 1993165, 3189064, 3986330, 6378128, 7972660, 15945320, 31890640]

約数ペア:

[(1, 31890640), (2, 15945320), (4, 7972660), (5, 6378128), (8, 3986330), (10, 3189064), (16, 1993165), (17, 1875920), (20, 1594532), (34, 937960), (40, 797266), (68, 468980), (80, 398633), (85, 375184), (131, 243440), (136, 234490), (170, 187592), (179, 178160), (262, 121720), (272, 117245), (340, 93796), (358, 89080), (524, 60860), (655, 48688), (680, 46898), (716, 44540), (895, 35632), (1048, 30430), (1310, 24344), (1360, 23449), (1432, 22270), (1790, 17816), (2096, 15215), (2227, 14320), (2620, 12172), (2864, 11135), (3043, 10480), (3580, 8908), (4454, 7160), (5240, 6086)]