27778821

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{601}}^1$

素因数の和:713

約数の個数: 32

約数和(自身を含む): 44384256

約数和(自身を除く): 16605435

約数列:

[1, 3, 7, 21, 31, 71, 93, 213, 217, 497, 601, 651, 1491, 1803, 2201, 4207, 6603, 12621, 15407, 18631, 42671, 46221, 55893, 128013, 130417, 298697, 391251, 896091, 1322801, 3968403, 9259607, 27778821]

約数ペア:

[(1, 27778821), (3, 9259607), (7, 3968403), (21, 1322801), (31, 896091), (71, 391251), (93, 298697), (213, 130417), (217, 128013), (497, 55893), (601, 46221), (651, 42671), (1491, 18631), (1803, 15407), (2201, 12621), (4207, 6603)]