518440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{997}}^1$

素因数の和:1021

約数の個数: 32

約数和(自身を含む): 1257480

約数和(自身を除く): 739040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 997, 1994, 3988, 4985, 7976, 9970, 12961, 19940, 25922, 39880, 51844, 64805, 103688, 129610, 259220, 518440]

約数ペア:

[(1, 518440), (2, 259220), (4, 129610), (5, 103688), (8, 64805), (10, 51844), (13, 39880), (20, 25922), (26, 19940), (40, 12961), (52, 9970), (65, 7976), (104, 4985), (130, 3988), (260, 1994), (520, 997)]