19917560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38303}}^1$

素因数の和:38327

約数の個数: 32

約数和(自身を含む): 48263040

約数和(自身を除く): 28345480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38303, 76606, 153212, 191515, 306424, 383030, 497939, 766060, 995878, 1532120, 1991756, 2489695, 3983512, 4979390, 9958780, 19917560]

約数ペア:

[(1, 19917560), (2, 9958780), (4, 4979390), (5, 3983512), (8, 2489695), (10, 1991756), (13, 1532120), (20, 995878), (26, 766060), (40, 497939), (52, 383030), (65, 306424), (104, 191515), (130, 153212), (260, 76606), (520, 38303)]