21291240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{177427}}^1$

素因数の和:177441

約数の個数: 32

約数和(自身を含む): 63874080

約数和(自身を除く): 42582840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 177427, 354854, 532281, 709708, 887135, 1064562, 1419416, 1774270, 2129124, 2661405, 3548540, 4258248, 5322810, 7097080, 10645620, 21291240]

約数ペア:

[(1, 21291240), (2, 10645620), (3, 7097080), (4, 5322810), (5, 4258248), (6, 3548540), (8, 2661405), (10, 2129124), (12, 1774270), (15, 1419416), (20, 1064562), (24, 887135), (30, 709708), (40, 532281), (60, 354854), (120, 177427)]