18939180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{24281}}^1$

素因数の和:24306

約数の個数: 48

約数和(自身を含む): 57111264

約数和(自身を除く): 38172084

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 24281, 48562, 72843, 97124, 121405, 145686, 242810, 291372, 315653, 364215, 485620, 631306, 728430, 946959, 1262612, 1456860, 1578265, 1893918, 3156530, 3787836, 4734795, 6313060, 9469590, 18939180]

約数ペア:

[(1, 18939180), (2, 9469590), (3, 6313060), (4, 4734795), (5, 3787836), (6, 3156530), (10, 1893918), (12, 1578265), (13, 1456860), (15, 1262612), (20, 946959), (26, 728430), (30, 631306), (39, 485620), (52, 364215), (60, 315653), (65, 291372), (78, 242810), (130, 145686), (156, 121405), (195, 97124), (260, 72843), (390, 48562), (780, 24281)]