18912160

素因数分解:

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

素因数の和:458

約数の個数: 72

約数和(自身を含む): 47578860

約数和(自身を除く): 28666700

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 289, 340, 409, 544, 578, 680, 818, 1156, 1360, 1445, 1636, 2045, 2312, 2720, 2890, 3272, 4090, 4624, 5780, 6544, 6953, 8180, 9248, 11560, 13088, 13906, 16360, 23120, 27812, 32720, 34765, 46240, 55624, 65440, 69530, 111248, 118201, 139060, 222496, 236402, 278120, 472804, 556240, 591005, 945608, 1112480, 1182010, 1891216, 2364020, 3782432, 4728040, 9456080, 18912160]

約数ペア:

[(1, 18912160), (2, 9456080), (4, 4728040), (5, 3782432), (8, 2364020), (10, 1891216), (16, 1182010), (17, 1112480), (20, 945608), (32, 591005), (34, 556240), (40, 472804), (68, 278120), (80, 236402), (85, 222496), (136, 139060), (160, 118201), (170, 111248), (272, 69530), (289, 65440), (340, 55624), (409, 46240), (544, 34765), (578, 32720), (680, 27812), (818, 23120), (1156, 16360), (1360, 13906), (1445, 13088), (1636, 11560), (2045, 9248), (2312, 8180), (2720, 6953), (2890, 6544), (3272, 5780), (4090, 4624)]