28135120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2081}}^1$

素因数の和:2120

約数の個数: 60

約数和(自身を含む): 70867116

約数和(自身を除く): 42731996

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, 2081, 2704, 3380, 4162, 6760, 8324, 10405, 13520, 16648, 20810, 27053, 33296, 41620, 54106, 83240, 108212, 135265, 166480, 216424, 270530, 351689, 432848, 541060, 703378, 1082120, 1406756, 1758445, 2164240, 2813512, 3516890, 5627024, 7033780, 14067560, 28135120]

約数ペア:

[(1, 28135120), (2, 14067560), (4, 7033780), (5, 5627024), (8, 3516890), (10, 2813512), (13, 2164240), (16, 1758445), (20, 1406756), (26, 1082120), (40, 703378), (52, 541060), (65, 432848), (80, 351689), (104, 270530), (130, 216424), (169, 166480), (208, 135265), (260, 108212), (338, 83240), (520, 54106), (676, 41620), (845, 33296), (1040, 27053), (1352, 20810), (1690, 16648), (2081, 13520), (2704, 10405), (3380, 8324), (4162, 6760)]