1281291249

素因数分解:

$3^1\times 7^4\times {\mathrm{177883}}^1$

素因数の和:177914

約数の個数: 20

約数和(自身を含む): 1993012336

約数和(自身を除く): 711721087

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 177883, 533649, 1245181, 3735543, 8716267, 26148801, 61013869, 183041607, 427097083, 1281291249]

約数ペア:

[(1, 1281291249), (3, 427097083), (7, 183041607), (21, 61013869), (49, 26148801), (147, 8716267), (343, 3735543), (1029, 1245181), (2401, 533649), (7203, 177883)]