131231490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{336491}}^1$

素因数の和:336514

約数の個数: 32

約数和(自身を含む): 339183936

約数和(自身を除く): 207952446

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 336491, 672982, 1009473, 1682455, 2018946, 3364910, 4374383, 5047365, 8748766, 10094730, 13123149, 21871915, 26246298, 43743830, 65615745, 131231490]

約数ペア:

[(1, 131231490), (2, 65615745), (3, 43743830), (5, 26246298), (6, 21871915), (10, 13123149), (13, 10094730), (15, 8748766), (26, 5047365), (30, 4374383), (39, 3364910), (65, 2018946), (78, 1682455), (130, 1009473), (195, 672982), (390, 336491)]