311912840

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{75707}}^1$

素因数の和:75821

約数の個数: 32

約数和(自身を含む): 708626880

約数和(自身を除く): 396714040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 75707, 151414, 302828, 378535, 605656, 757070, 1514140, 3028280, 7797821, 15595642, 31191284, 38989105, 62382568, 77978210, 155956420, 311912840]

約数ペア:

[(1, 311912840), (2, 155956420), (4, 77978210), (5, 62382568), (8, 38989105), (10, 31191284), (20, 15595642), (40, 7797821), (103, 3028280), (206, 1514140), (412, 757070), (515, 605656), (824, 378535), (1030, 302828), (2060, 151414), (4120, 75707)]