21492515

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:323

約数の個数: 32

約数和(自身を含む): 30032640

約数和(自身を除く): 8540125

約数列:

[1, 5, 11, 19, 55, 95, 131, 157, 209, 655, 785, 1045, 1441, 1727, 2489, 2983, 7205, 8635, 12445, 14915, 20567, 27379, 32813, 102835, 136895, 164065, 226237, 390773, 1131185, 1953865, 4298503, 21492515]

約数ペア:

[(1, 21492515), (5, 4298503), (11, 1953865), (19, 1131185), (55, 390773), (95, 226237), (131, 164065), (157, 136895), (209, 102835), (655, 32813), (785, 27379), (1045, 20567), (1441, 14915), (1727, 12445), (2489, 8635), (2983, 7205)]