18283928

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{487}}^1$

素因数の和:544

約数の個数: 48

約数和(自身を含む): 39044880

約数和(自身を除く): 20760952

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 361, 487, 494, 722, 974, 988, 1444, 1948, 1976, 2888, 3896, 4693, 6331, 9253, 9386, 12662, 18506, 18772, 25324, 37012, 37544, 50648, 74024, 120289, 175807, 240578, 351614, 481156, 703228, 962312, 1406456, 2285491, 4570982, 9141964, 18283928]

約数ペア:

[(1, 18283928), (2, 9141964), (4, 4570982), (8, 2285491), (13, 1406456), (19, 962312), (26, 703228), (38, 481156), (52, 351614), (76, 240578), (104, 175807), (152, 120289), (247, 74024), (361, 50648), (487, 37544), (494, 37012), (722, 25324), (974, 18772), (988, 18506), (1444, 12662), (1948, 9386), (1976, 9253), (2888, 6331), (3896, 4693)]