61981000

素因数分解:

$2^3\times 5^3\times {\mathrm{61981}}^1$

素因数の和:62002

約数の個数: 32

約数和(自身を含む): 145037880

約数和(自身を除く): 83056880

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 61981, 123962, 247924, 309905, 495848, 619810, 1239620, 1549525, 2479240, 3099050, 6198100, 7747625, 12396200, 15495250, 30990500, 61981000]

約数ペア:

[(1, 61981000), (2, 30990500), (4, 15495250), (5, 12396200), (8, 7747625), (10, 6198100), (20, 3099050), (25, 2479240), (40, 1549525), (50, 1239620), (100, 619810), (125, 495848), (200, 309905), (250, 247924), (500, 123962), (1000, 61981)]