20395545

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{307}}^1$

素因数の和:461

約数の個数: 32

約数和(自身を含む): 33825792

約数和(自身を除く): 13430247

約数列:

[1, 3, 5, 15, 43, 103, 129, 215, 307, 309, 515, 645, 921, 1535, 1545, 4429, 4605, 13201, 13287, 22145, 31621, 39603, 66005, 66435, 94863, 158105, 198015, 474315, 1359703, 4079109, 6798515, 20395545]

約数ペア:

[(1, 20395545), (3, 6798515), (5, 4079109), (15, 1359703), (43, 474315), (103, 198015), (129, 158105), (215, 94863), (307, 66435), (309, 66005), (515, 39603), (645, 31621), (921, 22145), (1535, 13287), (1545, 13201), (4429, 4605)]