19977204

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1621}}^1$

素因数の和:1720

約数の個数: 48

約数和(自身を含む): 50865920

約数和(自身を除く): 30888716

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 79, 156, 158, 237, 316, 474, 948, 1027, 1621, 2054, 3081, 3242, 4108, 4863, 6162, 6484, 9726, 12324, 19452, 21073, 42146, 63219, 84292, 126438, 128059, 252876, 256118, 384177, 512236, 768354, 1536708, 1664767, 3329534, 4994301, 6659068, 9988602, 19977204]

約数ペア:

[(1, 19977204), (2, 9988602), (3, 6659068), (4, 4994301), (6, 3329534), (12, 1664767), (13, 1536708), (26, 768354), (39, 512236), (52, 384177), (78, 256118), (79, 252876), (156, 128059), (158, 126438), (237, 84292), (316, 63219), (474, 42146), (948, 21073), (1027, 19452), (1621, 12324), (2054, 9726), (3081, 6484), (3242, 6162), (4108, 4863)]