20027800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7703}}^1$

素因数の和:7732

約数の個数: 48

約数和(自身を含む): 50153040

約数和(自身を除く): 30125240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 7703, 15406, 30812, 38515, 61624, 77030, 100139, 154060, 192575, 200278, 308120, 385150, 400556, 500695, 770300, 801112, 1001390, 1540600, 2002780, 2503475, 4005560, 5006950, 10013900, 20027800]

約数ペア:

[(1, 20027800), (2, 10013900), (4, 5006950), (5, 4005560), (8, 2503475), (10, 2002780), (13, 1540600), (20, 1001390), (25, 801112), (26, 770300), (40, 500695), (50, 400556), (52, 385150), (65, 308120), (100, 200278), (104, 192575), (130, 154060), (200, 100139), (260, 77030), (325, 61624), (520, 38515), (650, 30812), (1300, 15406), (2600, 7703)]