19891890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{221021}}^1$

素因数の和:221034

約数の個数: 24

約数和(自身を含む): 51719148

約数和(自身を除く): 31827258

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 221021, 442042, 663063, 1105105, 1326126, 1989189, 2210210, 3315315, 3978378, 6630630, 9945945, 19891890]

約数ペア:

[(1, 19891890), (2, 9945945), (3, 6630630), (5, 3978378), (6, 3315315), (9, 2210210), (10, 1989189), (15, 1326126), (18, 1105105), (30, 663063), (45, 442042), (90, 221021)]