18561218

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:386

約数の個数: 32

約数和(自身を含む): 31449600

約数和(自身を除く): 12888382

約数列:

[1, 2, 13, 26, 29, 58, 103, 206, 239, 377, 478, 754, 1339, 2678, 2987, 3107, 5974, 6214, 6931, 13862, 24617, 38831, 49234, 77662, 90103, 180206, 320021, 640042, 713893, 1427786, 9280609, 18561218]

約数ペア:

[(1, 18561218), (2, 9280609), (13, 1427786), (26, 713893), (29, 640042), (58, 320021), (103, 180206), (206, 90103), (239, 77662), (377, 49234), (478, 38831), (754, 24617), (1339, 13862), (2678, 6931), (2987, 6214), (3107, 5974)]