31426551

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 52474240

約数和(自身を除く): 21047689

約数列:

[1, 3, 9, 13, 19, 39, 57, 67, 117, 171, 201, 211, 247, 603, 633, 741, 871, 1273, 1899, 2223, 2613, 2743, 3819, 4009, 7839, 8229, 11457, 12027, 14137, 16549, 24687, 36081, 42411, 49647, 52117, 127233, 148941, 156351, 183781, 268603, 469053, 551343, 805809, 1654029, 2417427, 3491839, 10475517, 31426551]

約数ペア:

[(1, 31426551), (3, 10475517), (9, 3491839), (13, 2417427), (19, 1654029), (39, 805809), (57, 551343), (67, 469053), (117, 268603), (171, 183781), (201, 156351), (211, 148941), (247, 127233), (603, 52117), (633, 49647), (741, 42411), (871, 36081), (1273, 24687), (1899, 16549), (2223, 14137), (2613, 12027), (2743, 11457), (3819, 8229), (4009, 7839)]