19758440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37997}}^1$

素因数の和:38021

約数の個数: 32

約数和(自身を含む): 47877480

約数和(自身を除く): 28119040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 37997, 75994, 151988, 189985, 303976, 379970, 493961, 759940, 987922, 1519880, 1975844, 2469805, 3951688, 4939610, 9879220, 19758440]

約数ペア:

[(1, 19758440), (2, 9879220), (4, 4939610), (5, 3951688), (8, 2469805), (10, 1975844), (13, 1519880), (20, 987922), (26, 759940), (40, 493961), (52, 379970), (65, 303976), (104, 189985), (130, 151988), (260, 75994), (520, 37997)]