21961245

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{307}}^1$

素因数の和:585

約数の個数: 32

約数和(自身を含む): 37255680

約数和(自身を除く): 15294435

約数列:

[1, 3, 5, 15, 19, 57, 95, 251, 285, 307, 753, 921, 1255, 1535, 3765, 4605, 4769, 5833, 14307, 17499, 23845, 29165, 71535, 77057, 87495, 231171, 385285, 1155855, 1464083, 4392249, 7320415, 21961245]

約数ペア:

[(1, 21961245), (3, 7320415), (5, 4392249), (15, 1464083), (19, 1155855), (57, 385285), (95, 231171), (251, 87495), (285, 77057), (307, 71535), (753, 29165), (921, 23845), (1255, 17499), (1535, 14307), (3765, 5833), (4605, 4769)]