20307505

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1$

素因数の和:201

約数の個数: 32

約数和(自身を含む): 26853120

約数和(自身を除く): 6545615

約数列:

[1, 5, 23, 41, 59, 73, 115, 205, 295, 365, 943, 1357, 1679, 2419, 2993, 4307, 4715, 6785, 8395, 12095, 14965, 21535, 55637, 68839, 99061, 176587, 278185, 344195, 495305, 882935, 4061501, 20307505]

約数ペア:

[(1, 20307505), (5, 4061501), (23, 882935), (41, 495305), (59, 344195), (73, 278185), (115, 176587), (205, 99061), (295, 68839), (365, 55637), (943, 21535), (1357, 14965), (1679, 12095), (2419, 8395), (2993, 6785), (4307, 4715)]