12515740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 28141344

約数和(自身を除く): 15625604

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 131, 170, 262, 281, 340, 524, 562, 655, 1124, 1310, 1405, 2227, 2620, 2810, 4454, 4777, 5620, 8908, 9554, 11135, 19108, 22270, 23885, 36811, 44540, 47770, 73622, 95540, 147244, 184055, 368110, 625787, 736220, 1251574, 2503148, 3128935, 6257870, 12515740]

約数ペア:

[(1, 12515740), (2, 6257870), (4, 3128935), (5, 2503148), (10, 1251574), (17, 736220), (20, 625787), (34, 368110), (68, 184055), (85, 147244), (131, 95540), (170, 73622), (262, 47770), (281, 44540), (340, 36811), (524, 23885), (562, 22270), (655, 19108), (1124, 11135), (1310, 9554), (1405, 8908), (2227, 5620), (2620, 4777), (2810, 4454)]