21457384

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10859}}^1$

素因数の和:10897

約数の個数: 32

約数和(自身を含む): 45612000

約数和(自身を除く): 24154616

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 10859, 21718, 43436, 86872, 141167, 206321, 282334, 412642, 564668, 825284, 1129336, 1650568, 2682173, 5364346, 10728692, 21457384]

約数ペア:

[(1, 21457384), (2, 10728692), (4, 5364346), (8, 2682173), (13, 1650568), (19, 1129336), (26, 825284), (38, 564668), (52, 412642), (76, 282334), (104, 206321), (152, 141167), (247, 86872), (494, 43436), (988, 21718), (1976, 10859)]