217293835

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{661}}^1$

素因数の和:859

約数の個数: 32

約数和(自身を含む): 293610240

約数和(自身を除く): 76316405

約数列:

[1, 5, 11, 43, 55, 139, 215, 473, 661, 695, 1529, 2365, 3305, 5977, 7271, 7645, 28423, 29885, 36355, 65747, 91879, 142115, 312653, 328735, 459395, 1010669, 1563265, 3950797, 5053345, 19753985, 43458767, 217293835]

約数ペア:

[(1, 217293835), (5, 43458767), (11, 19753985), (43, 5053345), (55, 3950797), (139, 1563265), (215, 1010669), (473, 459395), (661, 328735), (695, 312653), (1529, 142115), (2365, 91879), (3305, 65747), (5977, 36355), (7271, 29885), (7645, 28423)]