247907920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{238373}}^1$

素因数の和:238399

約数の個数: 40

約数和(自身を含む): 620725896

約数和(自身を除く): 372817976

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 238373, 476746, 953492, 1191865, 1906984, 2383730, 3098849, 3813968, 4767460, 6197698, 9534920, 12395396, 15494245, 19069840, 24790792, 30988490, 49581584, 61976980, 123953960, 247907920]

約数ペア:

[(1, 247907920), (2, 123953960), (4, 61976980), (5, 49581584), (8, 30988490), (10, 24790792), (13, 19069840), (16, 15494245), (20, 12395396), (26, 9534920), (40, 6197698), (52, 4767460), (65, 3813968), (80, 3098849), (104, 2383730), (130, 1906984), (208, 1191865), (260, 953492), (520, 476746), (1040, 238373)]