21163870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1789}}^1$

素因数の和:1829

約数の個数: 48

約数和(自身を含む): 47170080

約数和(自身を除く): 26006210

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 169, 182, 338, 455, 845, 910, 1183, 1690, 1789, 2366, 3578, 5915, 8945, 11830, 12523, 17890, 23257, 25046, 46514, 62615, 116285, 125230, 162799, 232570, 302341, 325598, 604682, 813995, 1511705, 1627990, 2116387, 3023410, 4232774, 10581935, 21163870]

約数ペア:

[(1, 21163870), (2, 10581935), (5, 4232774), (7, 3023410), (10, 2116387), (13, 1627990), (14, 1511705), (26, 813995), (35, 604682), (65, 325598), (70, 302341), (91, 232570), (130, 162799), (169, 125230), (182, 116285), (338, 62615), (455, 46514), (845, 25046), (910, 23257), (1183, 17890), (1690, 12523), (1789, 11830), (2366, 8945), (3578, 5915)]