31140880

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4013}}^1$

素因数の和:4123

約数の個数: 40

約数和(自身を含む): 73167192

約数和(自身を除く): 42026312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 3880, 4013, 7760, 8026, 16052, 20065, 32104, 40130, 64208, 80260, 160520, 321040, 389261, 778522, 1557044, 1946305, 3114088, 3892610, 6228176, 7785220, 15570440, 31140880]

約数ペア:

[(1, 31140880), (2, 15570440), (4, 7785220), (5, 6228176), (8, 3892610), (10, 3114088), (16, 1946305), (20, 1557044), (40, 778522), (80, 389261), (97, 321040), (194, 160520), (388, 80260), (485, 64208), (776, 40130), (970, 32104), (1552, 20065), (1940, 16052), (3880, 8026), (4013, 7760)]