21876345

素因数分解:

$3^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1237}}^1$

素因数の和:1382

約数の個数: 32

約数和(自身を含む): 39219840

約数和(自身を除く): 17343495

約数列:

[1, 3, 5, 9, 15, 27, 45, 131, 135, 393, 655, 1179, 1237, 1965, 3537, 3711, 5895, 6185, 11133, 17685, 18555, 33399, 55665, 162047, 166995, 486141, 810235, 1458423, 2430705, 4375269, 7292115, 21876345]

約数ペア:

[(1, 21876345), (3, 7292115), (5, 4375269), (9, 2430705), (15, 1458423), (27, 810235), (45, 486141), (131, 166995), (135, 162047), (393, 55665), (655, 33399), (1179, 18555), (1237, 17685), (1965, 11133), (3537, 6185), (3711, 5895)]