28811120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2131}}^1$

素因数の和:2170

約数の個数: 60

約数和(自身を含む): 72569016

約数和(自身を除く): 43757896

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 676, 845, 1040, 1352, 1690, 2131, 2704, 3380, 4262, 6760, 8524, 10655, 13520, 17048, 21310, 27703, 34096, 42620, 55406, 85240, 110812, 138515, 170480, 221624, 277030, 360139, 443248, 554060, 720278, 1108120, 1440556, 1800695, 2216240, 2881112, 3601390, 5762224, 7202780, 14405560, 28811120]

約数ペア:

[(1, 28811120), (2, 14405560), (4, 7202780), (5, 5762224), (8, 3601390), (10, 2881112), (13, 2216240), (16, 1800695), (20, 1440556), (26, 1108120), (40, 720278), (52, 554060), (65, 443248), (80, 360139), (104, 277030), (130, 221624), (169, 170480), (208, 138515), (260, 110812), (338, 85240), (520, 55406), (676, 42620), (845, 34096), (1040, 27703), (1352, 21310), (1690, 17048), (2131, 13520), (2704, 10655), (3380, 8524), (4262, 6760)]