20216794899

素因数分解:

$3^1\times 7^3\times {\mathrm{3137}}^1\times {\mathrm{6263}}^1$

素因数の和:9424

約数の個数: 32

約数和(自身を含む): 31450291200

約数和(自身を除く): 11233496301

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 3137, 6263, 9411, 18789, 21959, 43841, 65877, 131523, 153713, 306887, 461139, 920661, 1075991, 2148209, 3227973, 6444627, 19647031, 58941093, 137529217, 412587651, 962704519, 2888113557, 6738931633, 20216794899]

約数ペア:

[(1, 20216794899), (3, 6738931633), (7, 2888113557), (21, 962704519), (49, 412587651), (147, 137529217), (343, 58941093), (1029, 19647031), (3137, 6444627), (6263, 3227973), (9411, 2148209), (18789, 1075991), (21959, 920661), (43841, 461139), (65877, 306887), (131523, 153713)]