21768915

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{1373}}^1$

素因数の和:1539

約数の個数: 32

約数和(自身を含む): 40098816

約数和(自身を除く): 18329901

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 151, 453, 755, 1057, 1373, 2265, 3171, 4119, 5285, 6865, 9611, 15855, 20595, 28833, 48055, 144165, 207323, 621969, 1036615, 1451261, 3109845, 4353783, 7256305, 21768915]

約数ペア:

[(1, 21768915), (3, 7256305), (5, 4353783), (7, 3109845), (15, 1451261), (21, 1036615), (35, 621969), (105, 207323), (151, 144165), (453, 48055), (755, 28833), (1057, 20595), (1373, 15855), (2265, 9611), (3171, 6865), (4119, 5285)]