31427560

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{409}}^1$

素因数の和:550

約数の個数: 64

約数和(自身を含む): 75718800

約数和(自身を除く): 44291240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 113, 136, 170, 226, 340, 409, 452, 565, 680, 818, 904, 1130, 1636, 1921, 2045, 2260, 3272, 3842, 4090, 4520, 6953, 7684, 8180, 9605, 13906, 15368, 16360, 19210, 27812, 34765, 38420, 46217, 55624, 69530, 76840, 92434, 139060, 184868, 231085, 278120, 369736, 462170, 785689, 924340, 1571378, 1848680, 3142756, 3928445, 6285512, 7856890, 15713780, 31427560]

約数ペア:

[(1, 31427560), (2, 15713780), (4, 7856890), (5, 6285512), (8, 3928445), (10, 3142756), (17, 1848680), (20, 1571378), (34, 924340), (40, 785689), (68, 462170), (85, 369736), (113, 278120), (136, 231085), (170, 184868), (226, 139060), (340, 92434), (409, 76840), (452, 69530), (565, 55624), (680, 46217), (818, 38420), (904, 34765), (1130, 27812), (1636, 19210), (1921, 16360), (2045, 15368), (2260, 13906), (3272, 9605), (3842, 8180), (4090, 7684), (4520, 6953)]