20721036399

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{31829549}}^1$

素因数の和:31829590

約数の個数: 16

約数和(自身を含む): 32593459200

約数和(自身を除く): 11872422801

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 31829549, 95488647, 222806843, 668420529, 986716019, 2960148057, 6907012133, 20721036399]

約数ペア:

[(1, 20721036399), (3, 6907012133), (7, 2960148057), (21, 986716019), (31, 668420529), (93, 222806843), (217, 95488647), (651, 31829549)]