28491561

素因数分解:

$3^3\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1187}}^1$

素因数の和:1330

約数の個数: 32

約数和(自身を含む): 48660480

約数和(自身を除く): 20168919

約数列:

[1, 3, 7, 9, 21, 27, 63, 127, 189, 381, 889, 1143, 1187, 2667, 3429, 3561, 8001, 8309, 10683, 24003, 24927, 32049, 74781, 150749, 224343, 452247, 1055243, 1356741, 3165729, 4070223, 9497187, 28491561]

約数ペア:

[(1, 28491561), (3, 9497187), (7, 4070223), (9, 3165729), (21, 1356741), (27, 1055243), (63, 452247), (127, 224343), (189, 150749), (381, 74781), (889, 32049), (1143, 24927), (1187, 24003), (2667, 10683), (3429, 8309), (3561, 8001)]