19439225

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:186

約数の個数: 36

約数和(自身を含む): 26958096

約数和(自身を除く): 7518871

約数列:

[1, 5, 13, 25, 43, 65, 107, 169, 215, 325, 535, 559, 845, 1075, 1391, 2675, 2795, 4225, 4601, 6955, 7267, 13975, 18083, 23005, 34775, 36335, 59813, 90415, 115025, 181675, 299065, 452075, 777569, 1495325, 3887845, 19439225]

約数ペア:

[(1, 19439225), (5, 3887845), (13, 1495325), (25, 777569), (43, 452075), (65, 299065), (107, 181675), (169, 115025), (215, 90415), (325, 59813), (535, 36335), (559, 34775), (845, 23005), (1075, 18083), (1391, 13975), (2675, 7267), (2795, 6955), (4225, 4601)]