21302530

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^2\times {\mathrm{149}}^1$

素因数の和:231

約数の個数: 48

約数和(自身を含む): 42330600

約数和(自身を除く): 21028070

約数列:

[1, 2, 5, 10, 17, 29, 34, 58, 85, 145, 149, 170, 290, 298, 493, 745, 841, 986, 1490, 1682, 2465, 2533, 4205, 4321, 4930, 5066, 8410, 8642, 12665, 14297, 21605, 25330, 28594, 43210, 71485, 73457, 125309, 142970, 146914, 250618, 367285, 626545, 734570, 1253090, 2130253, 4260506, 10651265, 21302530]

約数ペア:

[(1, 21302530), (2, 10651265), (5, 4260506), (10, 2130253), (17, 1253090), (29, 734570), (34, 626545), (58, 367285), (85, 250618), (145, 146914), (149, 142970), (170, 125309), (290, 73457), (298, 71485), (493, 43210), (745, 28594), (841, 25330), (986, 21605), (1490, 14297), (1682, 12665), (2465, 8642), (2533, 8410), (4205, 5066), (4321, 4930)]