20421642

素因数分解:

$2^1\times 3^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{431}}^1$

素因数の和:638

約数の個数: 32

約数和(自身を含む): 41990400

約数和(自身を除く): 21568758

約数列:

[1, 2, 3, 6, 53, 106, 149, 159, 298, 318, 431, 447, 862, 894, 1293, 2586, 7897, 15794, 22843, 23691, 45686, 47382, 64219, 68529, 128438, 137058, 192657, 385314, 3403607, 6807214, 10210821, 20421642]

約数ペア:

[(1, 20421642), (2, 10210821), (3, 6807214), (6, 3403607), (53, 385314), (106, 192657), (149, 137058), (159, 128438), (298, 68529), (318, 64219), (431, 47382), (447, 45686), (862, 23691), (894, 22843), (1293, 15794), (2586, 7897)]