1290391802

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{156487}}^1$

素因数の和:156546

約数の個数: 32

約数和(自身を含む): 2403655680

約数和(自身を除く): 1113263878

約数列:

[1, 2, 7, 14, 19, 31, 38, 62, 133, 217, 266, 434, 589, 1178, 4123, 8246, 156487, 312974, 1095409, 2190818, 2973253, 4851097, 5946506, 9702194, 20812771, 33957679, 41625542, 67915358, 92170843, 184341686, 645195901, 1290391802]

約数ペア:

[(1, 1290391802), (2, 645195901), (7, 184341686), (14, 92170843), (19, 67915358), (31, 41625542), (38, 33957679), (62, 20812771), (133, 9702194), (217, 5946506), (266, 4851097), (434, 2973253), (589, 2190818), (1178, 1095409), (4123, 312974), (8246, 156487)]