21000906395

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{224813}}^1$

素因数の和:224999

約数の個数: 32

約数和(自身を含む): 30689808768

約数和(自身を除く): 9688902373

約数列:

[1, 5, 7, 17, 35, 85, 119, 157, 595, 785, 1099, 2669, 5495, 13345, 18683, 93415, 224813, 1124065, 1573691, 3821821, 7868455, 19109105, 26752747, 35295641, 133763735, 176478205, 247069487, 600025897, 1235347435, 3000129485, 4200181279, 21000906395]

約数ペア:

[(1, 21000906395), (5, 4200181279), (7, 3000129485), (17, 1235347435), (35, 600025897), (85, 247069487), (119, 176478205), (157, 133763735), (595, 35295641), (785, 26752747), (1099, 19109105), (2669, 7868455), (5495, 3821821), (13345, 1573691), (18683, 1124065), (93415, 224813)]