1981300

素因数分解:

$2^2\times 5^2\times {\mathrm{19813}}^1$

素因数の和:19827

約数の個数: 18

約数和(自身を含む): 4299638

約数和(自身を除く): 2318338

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 19813, 39626, 79252, 99065, 198130, 396260, 495325, 990650, 1981300]

約数ペア:

[(1, 1981300), (2, 990650), (4, 495325), (5, 396260), (10, 198130), (20, 99065), (25, 79252), (50, 39626), (100, 19813)]