21670715

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{463}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 30468096

約数和(自身を除く): 8797381

約数列:

[1, 5, 11, 23, 37, 55, 115, 185, 253, 407, 463, 851, 1265, 2035, 2315, 4255, 5093, 9361, 10649, 17131, 25465, 46805, 53245, 85655, 117139, 188441, 394013, 585695, 942205, 1970065, 4334143, 21670715]

約数ペア:

[(1, 21670715), (5, 4334143), (11, 1970065), (23, 942205), (37, 585695), (55, 394013), (115, 188441), (185, 117139), (253, 85655), (407, 53245), (463, 46805), (851, 25465), (1265, 17131), (2035, 10649), (2315, 9361), (4255, 5093)]