19555120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18803}}^1$

素因数の和:18829

約数の個数: 40

約数和(自身を含む): 48965616

約数和(自身を除く): 29410496

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 18803, 37606, 75212, 94015, 150424, 188030, 244439, 300848, 376060, 488878, 752120, 977756, 1222195, 1504240, 1955512, 2444390, 3911024, 4888780, 9777560, 19555120]

約数ペア:

[(1, 19555120), (2, 9777560), (4, 4888780), (5, 3911024), (8, 2444390), (10, 1955512), (13, 1504240), (16, 1222195), (20, 977756), (26, 752120), (40, 488878), (52, 376060), (65, 300848), (80, 244439), (104, 188030), (130, 150424), (208, 94015), (260, 75212), (520, 37606), (1040, 18803)]