7138988720

素因数分解:

$2^4\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{44641}}^1$

素因数の和:46653

約数の個数: 40

約数和(自身を含む): 16606824000

約数和(自身を除く): 9467835280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1999, 3998, 7996, 9995, 15992, 19990, 31984, 39980, 44641, 79960, 89282, 159920, 178564, 223205, 357128, 446410, 714256, 892820, 1785640, 3571280, 89237359, 178474718, 356949436, 446186795, 713898872, 892373590, 1427797744, 1784747180, 3569494360, 7138988720]

約数ペア:

[(1, 7138988720), (2, 3569494360), (4, 1784747180), (5, 1427797744), (8, 892373590), (10, 713898872), (16, 446186795), (20, 356949436), (40, 178474718), (80, 89237359), (1999, 3571280), (3998, 1785640), (7996, 892820), (9995, 714256), (15992, 446410), (19990, 357128), (31984, 223205), (39980, 178564), (44641, 159920), (79960, 89282)]