728390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{431}}^1$

素因数の和:464

約数の個数: 24

約数和(自身を含む): 1423008

約数和(自身を除く): 694618

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 431, 845, 862, 1690, 2155, 4310, 5603, 11206, 28015, 56030, 72839, 145678, 364195, 728390]

約数ペア:

[(1, 728390), (2, 364195), (5, 145678), (10, 72839), (13, 56030), (26, 28015), (65, 11206), (130, 5603), (169, 4310), (338, 2155), (431, 1690), (845, 862)]