39956020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{643}}^1$

素因数の和:904

約数の個数: 48

約数和(自身を含む): 90881280

約数和(自身を除く): 50925260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 239, 260, 478, 643, 956, 1195, 1286, 2390, 2572, 3107, 3215, 4780, 6214, 6430, 8359, 12428, 12860, 15535, 16718, 31070, 33436, 41795, 62140, 83590, 153677, 167180, 307354, 614708, 768385, 1536770, 1997801, 3073540, 3995602, 7991204, 9989005, 19978010, 39956020]

約数ペア:

[(1, 39956020), (2, 19978010), (4, 9989005), (5, 7991204), (10, 3995602), (13, 3073540), (20, 1997801), (26, 1536770), (52, 768385), (65, 614708), (130, 307354), (239, 167180), (260, 153677), (478, 83590), (643, 62140), (956, 41795), (1195, 33436), (1286, 31070), (2390, 16718), (2572, 15535), (3107, 12860), (3215, 12428), (4780, 8359), (6214, 6430)]