28931889

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1229}}^1$

素因数の和:1317

約数の個数: 32

約数和(自身を含む): 47232000

約数和(自身を除く): 18300111

約数列:

[1, 3, 7, 19, 21, 57, 59, 133, 177, 399, 413, 1121, 1229, 1239, 3363, 3687, 7847, 8603, 23351, 23541, 25809, 70053, 72511, 163457, 217533, 490371, 507577, 1377709, 1522731, 4133127, 9643963, 28931889]

約数ペア:

[(1, 28931889), (3, 9643963), (7, 4133127), (19, 1522731), (21, 1377709), (57, 507577), (59, 490371), (133, 217533), (177, 163457), (399, 72511), (413, 70053), (1121, 25809), (1229, 23541), (1239, 23351), (3363, 8603), (3687, 7847)]