21155870

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{359}}^1$

素因数の和:520

約数の個数: 32

約数和(自身を含む): 39191040

約数和(自身を除く): 18035170

約数列:

[1, 2, 5, 10, 71, 83, 142, 166, 355, 359, 415, 710, 718, 830, 1795, 3590, 5893, 11786, 25489, 29465, 29797, 50978, 58930, 59594, 127445, 148985, 254890, 297970, 2115587, 4231174, 10577935, 21155870]

約数ペア:

[(1, 21155870), (2, 10577935), (5, 4231174), (10, 2115587), (71, 297970), (83, 254890), (142, 148985), (166, 127445), (355, 59594), (359, 58930), (415, 50978), (710, 29797), (718, 29465), (830, 25489), (1795, 11786), (3590, 5893)]