19905840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{27647}}^1$

素因数の和:27666

約数の個数: 60

約数和(自身を含む): 66852864

約数和(自身を除く): 46947024

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 27647, 55294, 82941, 110588, 138235, 165882, 221176, 248823, 276470, 331764, 414705, 442352, 497646, 552940, 663528, 829410, 995292, 1105880, 1244115, 1327056, 1658820, 1990584, 2211760, 2488230, 3317640, 3981168, 4976460, 6635280, 9952920, 19905840]

約数ペア:

[(1, 19905840), (2, 9952920), (3, 6635280), (4, 4976460), (5, 3981168), (6, 3317640), (8, 2488230), (9, 2211760), (10, 1990584), (12, 1658820), (15, 1327056), (16, 1244115), (18, 1105880), (20, 995292), (24, 829410), (30, 663528), (36, 552940), (40, 497646), (45, 442352), (48, 414705), (60, 331764), (72, 276470), (80, 248823), (90, 221176), (120, 165882), (144, 138235), (180, 110588), (240, 82941), (360, 55294), (720, 27647)]