19379915

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{431}}^1$

素因数の和:499

約数の個数: 24

約数和(自身を含む): 25800768

約数和(自身を除く): 6420853

約数列:

[1, 5, 17, 23, 85, 115, 391, 431, 529, 1955, 2155, 2645, 7327, 8993, 9913, 36635, 44965, 49565, 168521, 227999, 842605, 1139995, 3875983, 19379915]

約数ペア:

[(1, 19379915), (5, 3875983), (17, 1139995), (23, 842605), (85, 227999), (115, 168521), (391, 49565), (431, 44965), (529, 36635), (1955, 9913), (2155, 8993), (2645, 7327)]