71897721

素因数分解:

$3^1\times 7^1\times {\mathrm{1801}}^1\times {\mathrm{1901}}^1$

素因数の和:3712

約数の個数: 16

約数和(自身を含む): 109676928

約数和(自身を除く): 37779207

約数列:

[1, 3, 7, 21, 1801, 1901, 5403, 5703, 12607, 13307, 37821, 39921, 3423701, 10271103, 23965907, 71897721]

約数ペア:

[(1, 71897721), (3, 23965907), (7, 10271103), (21, 3423701), (1801, 39921), (1901, 37821), (5403, 13307), (5703, 12607)]