128218215

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{2837}}^1$

素因数の和:2999

約数の個数: 32

約数和(自身を含む): 215778816

約数和(自身を除く): 87560601

約数列:

[1, 3, 5, 15, 23, 69, 115, 131, 345, 393, 655, 1965, 2837, 3013, 8511, 9039, 14185, 15065, 42555, 45195, 65251, 195753, 326255, 371647, 978765, 1114941, 1858235, 5574705, 8547881, 25643643, 42739405, 128218215]

約数ペア:

[(1, 128218215), (3, 42739405), (5, 25643643), (15, 8547881), (23, 5574705), (69, 1858235), (115, 1114941), (131, 978765), (345, 371647), (393, 326255), (655, 195753), (1965, 65251), (2837, 45195), (3013, 42555), (8511, 15065), (9039, 14185)]