18815925

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 33122880

約数和(自身を除く): 14306955

約数列:

[1, 3, 5, 15, 25, 29, 41, 75, 87, 123, 145, 205, 211, 435, 615, 633, 725, 1025, 1055, 1189, 2175, 3075, 3165, 3567, 5275, 5945, 6119, 8651, 15825, 17835, 18357, 25953, 29725, 30595, 43255, 89175, 91785, 129765, 152975, 216275, 250879, 458925, 648825, 752637, 1254395, 3763185, 6271975, 18815925]

約数ペア:

[(1, 18815925), (3, 6271975), (5, 3763185), (15, 1254395), (25, 752637), (29, 648825), (41, 458925), (75, 250879), (87, 216275), (123, 152975), (145, 129765), (205, 91785), (211, 89175), (435, 43255), (615, 30595), (633, 29725), (725, 25953), (1025, 18357), (1055, 17835), (1189, 15825), (2175, 8651), (3075, 6119), (3165, 5945), (3567, 5275)]