81385356

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{1301}}^1$

素因数の和:1722

約数の個数: 48

約数和(自身を含む): 205174368

約数和(自身を除く): 123789012

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 401, 802, 1203, 1301, 1604, 2406, 2602, 3903, 4812, 5204, 5213, 7806, 10426, 15612, 15639, 16913, 20852, 31278, 33826, 50739, 62556, 67652, 101478, 202956, 521701, 1043402, 1565103, 2086804, 3130206, 6260412, 6782113, 13564226, 20346339, 27128452, 40692678, 81385356]

約数ペア:

[(1, 81385356), (2, 40692678), (3, 27128452), (4, 20346339), (6, 13564226), (12, 6782113), (13, 6260412), (26, 3130206), (39, 2086804), (52, 1565103), (78, 1043402), (156, 521701), (401, 202956), (802, 101478), (1203, 67652), (1301, 62556), (1604, 50739), (2406, 33826), (2602, 31278), (3903, 20852), (4812, 16913), (5204, 15639), (5213, 15612), (7806, 10426)]