31618120

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{281}}^1$

素因数の和:418

約数の個数: 64

約数和(自身を含む): 74617200

約数和(自身を除く): 42999080

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 97, 116, 145, 194, 232, 281, 290, 388, 485, 562, 580, 776, 970, 1124, 1160, 1405, 1940, 2248, 2810, 2813, 3880, 5620, 5626, 8149, 11240, 11252, 14065, 16298, 22504, 27257, 28130, 32596, 40745, 54514, 56260, 65192, 81490, 109028, 112520, 136285, 162980, 218056, 272570, 325960, 545140, 790453, 1090280, 1580906, 3161812, 3952265, 6323624, 7904530, 15809060, 31618120]

約数ペア:

[(1, 31618120), (2, 15809060), (4, 7904530), (5, 6323624), (8, 3952265), (10, 3161812), (20, 1580906), (29, 1090280), (40, 790453), (58, 545140), (97, 325960), (116, 272570), (145, 218056), (194, 162980), (232, 136285), (281, 112520), (290, 109028), (388, 81490), (485, 65192), (562, 56260), (580, 54514), (776, 40745), (970, 32596), (1124, 28130), (1160, 27257), (1405, 22504), (1940, 16298), (2248, 14065), (2810, 11252), (2813, 11240), (3880, 8149), (5620, 5626)]