21813898

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{1031}}^1$

素因数の和:1253

約数の個数: 16

約数和(自身を含む): 33436800

約数和(自身を除く): 11622902

約数列:

[1, 2, 71, 142, 149, 298, 1031, 2062, 10579, 21158, 73201, 146402, 153619, 307238, 10906949, 21813898]

約数ペア:

[(1, 21813898), (2, 10906949), (71, 307238), (142, 153619), (149, 146402), (298, 73201), (1031, 21158), (2062, 10579)]