991890819

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{331}}^1\times {\mathrm{2707}}^1$

素因数の和:3088

約数の個数: 32

約数和(自身を含む): 1510414080

約数和(自身を除く): 518523261

約数列:

[1, 3, 9, 27, 41, 123, 331, 369, 993, 1107, 2707, 2979, 8121, 8937, 13571, 24363, 40713, 73089, 110987, 122139, 332961, 366417, 896017, 998883, 2688051, 2996649, 8064153, 24192459, 36736697, 110210091, 330630273, 991890819]

約数ペア:

[(1, 991890819), (3, 330630273), (9, 110210091), (27, 36736697), (41, 24192459), (123, 8064153), (331, 2996649), (369, 2688051), (993, 998883), (1107, 896017), (2707, 366417), (2979, 332961), (8121, 122139), (8937, 110987), (13571, 73089), (24363, 40713)]