31391780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{9749}}^1$

素因数の和:9788

約数の個数: 48

約数和(自身を含む): 78624000

約数和(自身を除く): 47232220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 9749, 19498, 38996, 48745, 68243, 97490, 136486, 194980, 224227, 272972, 341215, 448454, 682430, 896908, 1121135, 1364860, 1569589, 2242270, 3139178, 4484540, 6278356, 7847945, 15695890, 31391780]

約数ペア:

[(1, 31391780), (2, 15695890), (4, 7847945), (5, 6278356), (7, 4484540), (10, 3139178), (14, 2242270), (20, 1569589), (23, 1364860), (28, 1121135), (35, 896908), (46, 682430), (70, 448454), (92, 341215), (115, 272972), (140, 224227), (161, 194980), (230, 136486), (322, 97490), (460, 68243), (644, 48745), (805, 38996), (1610, 19498), (3220, 9749)]