21666820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{22109}}^1$

素因数の和:22132

約数の個数: 36

約数和(自身を含む): 52931340

約数和(自身を除く): 31264520

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 22109, 44218, 88436, 110545, 154763, 221090, 309526, 442180, 619052, 773815, 1083341, 1547630, 2166682, 3095260, 4333364, 5416705, 10833410, 21666820]

約数ペア:

[(1, 21666820), (2, 10833410), (4, 5416705), (5, 4333364), (7, 3095260), (10, 2166682), (14, 1547630), (20, 1083341), (28, 773815), (35, 619052), (49, 442180), (70, 309526), (98, 221090), (140, 154763), (196, 110545), (245, 88436), (490, 44218), (980, 22109)]