19878420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{331307}}^1$

素因数の和:331319

約数の個数: 24

約数和(自身を含む): 55659744

約数和(自身を除く): 35781324

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 331307, 662614, 993921, 1325228, 1656535, 1987842, 3313070, 3975684, 4969605, 6626140, 9939210, 19878420]

約数ペア:

[(1, 19878420), (2, 9939210), (3, 6626140), (4, 4969605), (5, 3975684), (6, 3313070), (10, 1987842), (12, 1656535), (15, 1325228), (20, 993921), (30, 662614), (60, 331307)]