21342360

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13681}}^1$

素因数の和:13708

約数の個数: 64

約数和(自身を含む): 68957280

約数和(自身を除く): 47614920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13681, 27362, 41043, 54724, 68405, 82086, 109448, 136810, 164172, 177853, 205215, 273620, 328344, 355706, 410430, 533559, 547240, 711412, 820860, 889265, 1067118, 1422824, 1641720, 1778530, 2134236, 2667795, 3557060, 4268472, 5335590, 7114120, 10671180, 21342360]

約数ペア:

[(1, 21342360), (2, 10671180), (3, 7114120), (4, 5335590), (5, 4268472), (6, 3557060), (8, 2667795), (10, 2134236), (12, 1778530), (13, 1641720), (15, 1422824), (20, 1067118), (24, 889265), (26, 820860), (30, 711412), (39, 547240), (40, 533559), (52, 410430), (60, 355706), (65, 328344), (78, 273620), (104, 205215), (120, 177853), (130, 164172), (156, 136810), (195, 109448), (260, 82086), (312, 68405), (390, 54724), (520, 41043), (780, 27362), (1560, 13681)]