21121000

素因数分解:

$2^3\times 5^3\times {\mathrm{21121}}^1$

素因数の和:21142

約数の個数: 32

約数和(自身を含む): 49425480

約数和(自身を除く): 28304480

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 21121, 42242, 84484, 105605, 168968, 211210, 422420, 528025, 844840, 1056050, 2112100, 2640125, 4224200, 5280250, 10560500, 21121000]

約数ペア:

[(1, 21121000), (2, 10560500), (4, 5280250), (5, 4224200), (8, 2640125), (10, 2112100), (20, 1056050), (25, 844840), (40, 528025), (50, 422420), (100, 211210), (125, 168968), (200, 105605), (250, 84484), (500, 42242), (1000, 21121)]