28278201

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{461}}^1$

素因数の和:621

約数の個数: 32

約数和(自身を含む): 45416448

約数和(自身を除く): 17138247

約数列:

[1, 3, 7, 21, 23, 69, 127, 161, 381, 461, 483, 889, 1383, 2667, 2921, 3227, 8763, 9681, 10603, 20447, 31809, 58547, 61341, 74221, 175641, 222663, 409829, 1229487, 1346581, 4039743, 9426067, 28278201]

約数ペア:

[(1, 28278201), (3, 9426067), (7, 4039743), (21, 1346581), (23, 1229487), (69, 409829), (127, 222663), (161, 175641), (381, 74221), (461, 61341), (483, 58547), (889, 31809), (1383, 20447), (2667, 10603), (2921, 9681), (3227, 8763)]