21597140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63521}}^1$

素因数の和:63547

約数の個数: 24

約数和(自身を含む): 48022632

約数和(自身を除く): 26425492

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63521, 127042, 254084, 317605, 635210, 1079857, 1270420, 2159714, 4319428, 5399285, 10798570, 21597140]

約数ペア:

[(1, 21597140), (2, 10798570), (4, 5399285), (5, 4319428), (10, 2159714), (17, 1270420), (20, 1079857), (34, 635210), (68, 317605), (85, 254084), (170, 127042), (340, 63521)]