290439128

素因数分解:

$2^3\times 7^1\times {\mathrm{251}}^1\times {\mathrm{20663}}^1$

素因数の和:20927

約数の個数: 32

約数和(自身を含む): 624879360

約数和(自身を除く): 334440232

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 251, 502, 1004, 1757, 2008, 3514, 7028, 14056, 20663, 41326, 82652, 144641, 165304, 289282, 578564, 1157128, 5186413, 10372826, 20745652, 36304891, 41491304, 72609782, 145219564, 290439128]

約数ペア:

[(1, 290439128), (2, 145219564), (4, 72609782), (7, 41491304), (8, 36304891), (14, 20745652), (28, 10372826), (56, 5186413), (251, 1157128), (502, 578564), (1004, 289282), (1757, 165304), (2008, 144641), (3514, 82652), (7028, 41326), (14056, 20663)]