12940640

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2609}}^1$

素因数の和:2655

約数の個数: 48

約数和(自身を含む): 31570560

約数和(自身を除く): 18629920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 2609, 4960, 5218, 10436, 13045, 20872, 26090, 41744, 52180, 80879, 83488, 104360, 161758, 208720, 323516, 404395, 417440, 647032, 808790, 1294064, 1617580, 2588128, 3235160, 6470320, 12940640]

約数ペア:

[(1, 12940640), (2, 6470320), (4, 3235160), (5, 2588128), (8, 1617580), (10, 1294064), (16, 808790), (20, 647032), (31, 417440), (32, 404395), (40, 323516), (62, 208720), (80, 161758), (124, 104360), (155, 83488), (160, 80879), (248, 52180), (310, 41744), (496, 26090), (620, 20872), (992, 13045), (1240, 10436), (2480, 5218), (2609, 4960)]