12921500

素因数分解:

$2^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{601}}^1$

素因数の和:663

約数の個数: 48

約数和(自身を含む): 28924896

約数和(自身を除く): 16003396

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 215, 250, 430, 500, 601, 860, 1075, 1202, 2150, 2404, 3005, 4300, 5375, 6010, 10750, 12020, 15025, 21500, 25843, 30050, 51686, 60100, 75125, 103372, 129215, 150250, 258430, 300500, 516860, 646075, 1292150, 2584300, 3230375, 6460750, 12921500]

約数ペア:

[(1, 12921500), (2, 6460750), (4, 3230375), (5, 2584300), (10, 1292150), (20, 646075), (25, 516860), (43, 300500), (50, 258430), (86, 150250), (100, 129215), (125, 103372), (172, 75125), (215, 60100), (250, 51686), (430, 30050), (500, 25843), (601, 21500), (860, 15025), (1075, 12020), (1202, 10750), (2150, 6010), (2404, 5375), (3005, 4300)]