1285321720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{111187}}^1$

素因数の和:111232

約数の個数: 48

約数和(自身を含む): 3072124440

約数和(自身を除く): 1786802720

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1156, 1445, 2312, 2890, 5780, 11560, 111187, 222374, 444748, 555935, 889496, 1111870, 1890179, 2223740, 3780358, 4447480, 7560716, 9450895, 15121432, 18901790, 32133043, 37803580, 64266086, 75607160, 128532172, 160665215, 257064344, 321330430, 642660860, 1285321720]

約数ペア:

[(1, 1285321720), (2, 642660860), (4, 321330430), (5, 257064344), (8, 160665215), (10, 128532172), (17, 75607160), (20, 64266086), (34, 37803580), (40, 32133043), (68, 18901790), (85, 15121432), (136, 9450895), (170, 7560716), (289, 4447480), (340, 3780358), (578, 2223740), (680, 1890179), (1156, 1111870), (1445, 889496), (2312, 555935), (2890, 444748), (5780, 222374), (11560, 111187)]