81315255

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{317}}^1\times {\mathrm{349}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 152258400

約数和(自身を除く): 70943145

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 317, 349, 735, 951, 1047, 1585, 1745, 2219, 2443, 4755, 5235, 6657, 7329, 11095, 12215, 15533, 17101, 33285, 36645, 46599, 51303, 77665, 85505, 110633, 232995, 256515, 331899, 553165, 774431, 1659495, 2323293, 3872155, 5421017, 11616465, 16263051, 27105085, 81315255]

約数ペア:

[(1, 81315255), (3, 27105085), (5, 16263051), (7, 11616465), (15, 5421017), (21, 3872155), (35, 2323293), (49, 1659495), (105, 774431), (147, 553165), (245, 331899), (317, 256515), (349, 232995), (735, 110633), (951, 85505), (1047, 77665), (1585, 51303), (1745, 46599), (2219, 36645), (2443, 33285), (4755, 17101), (5235, 15533), (6657, 12215), (7329, 11095)]