18913520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13907}}^1$

素因数の和:13937

約数の個数: 40

約数和(自身を含む): 46563984

約数和(自身を除く): 27650464

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13907, 27814, 55628, 69535, 111256, 139070, 222512, 236419, 278140, 472838, 556280, 945676, 1112560, 1182095, 1891352, 2364190, 3782704, 4728380, 9456760, 18913520]

約数ペア:

[(1, 18913520), (2, 9456760), (4, 4728380), (5, 3782704), (8, 2364190), (10, 1891352), (16, 1182095), (17, 1112560), (20, 945676), (34, 556280), (40, 472838), (68, 278140), (80, 236419), (85, 222512), (136, 139070), (170, 111256), (272, 69535), (340, 55628), (680, 27814), (1360, 13907)]