665340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{853}}^1$

素因数の和:878

約数の個数: 48

約数和(自身を含む): 2008608

約数和(自身を除く): 1343268

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 853, 1706, 2559, 3412, 4265, 5118, 8530, 10236, 11089, 12795, 17060, 22178, 25590, 33267, 44356, 51180, 55445, 66534, 110890, 133068, 166335, 221780, 332670, 665340]

約数ペア:

[(1, 665340), (2, 332670), (3, 221780), (4, 166335), (5, 133068), (6, 110890), (10, 66534), (12, 55445), (13, 51180), (15, 44356), (20, 33267), (26, 25590), (30, 22178), (39, 17060), (52, 12795), (60, 11089), (65, 10236), (78, 8530), (130, 5118), (156, 4265), (195, 3412), (260, 2559), (390, 1706), (780, 853)]