21324130

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{491}}^1$

素因数の和:642

約数の個数: 32

約数和(自身を含む): 39745728

約数和(自身を除く): 18421598

約数列:

[1, 2, 5, 10, 43, 86, 101, 202, 215, 430, 491, 505, 982, 1010, 2455, 4343, 4910, 8686, 21113, 21715, 42226, 43430, 49591, 99182, 105565, 211130, 247955, 495910, 2132413, 4264826, 10662065, 21324130]

約数ペア:

[(1, 21324130), (2, 10662065), (5, 4264826), (10, 2132413), (43, 495910), (86, 247955), (101, 211130), (202, 105565), (215, 99182), (430, 49591), (491, 43430), (505, 42226), (982, 21715), (1010, 21113), (2455, 8686), (4343, 4910)]