1213777791

素因数分解:

$3^4\times {\mathrm{991}}^1\times {\mathrm{15121}}^1$

素因数の和:16124

約数の個数: 20

約数和(自身を含む): 1815123904

約数和(自身を除く): 601346113

約数列:

[1, 3, 9, 27, 81, 991, 2973, 8919, 15121, 26757, 45363, 80271, 136089, 408267, 1224801, 14984911, 44954733, 134864199, 404592597, 1213777791]

約数ペア:

[(1, 1213777791), (3, 404592597), (9, 134864199), (27, 44954733), (81, 14984911), (991, 1224801), (2973, 408267), (8919, 136089), (15121, 80271), (26757, 45363)]