199921505

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{431}}^1\times {\mathrm{457}}^1$

素因数の和:929

約数の個数: 32

約数和(自身を含む): 284912640

約数和(自身を除く): 84991135

約数列:

[1, 5, 7, 29, 35, 145, 203, 431, 457, 1015, 2155, 2285, 3017, 3199, 12499, 13253, 15085, 15995, 62495, 66265, 87493, 92771, 196967, 437465, 463855, 984835, 1378769, 5712043, 6893845, 28560215, 39984301, 199921505]

約数ペア:

[(1, 199921505), (5, 39984301), (7, 28560215), (29, 6893845), (35, 5712043), (145, 1378769), (203, 984835), (431, 463855), (457, 437465), (1015, 196967), (2155, 92771), (2285, 87493), (3017, 66265), (3199, 62495), (12499, 15995), (13253, 15085)]