19192405

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:213

約数の個数: 32

約数和(自身を含む): 25660800

約数和(自身を除く): 6468395

約数列:

[1, 5, 17, 43, 59, 85, 89, 215, 295, 445, 731, 1003, 1513, 2537, 3655, 3827, 5015, 5251, 7565, 12685, 19135, 26255, 43129, 65059, 89267, 215645, 225793, 325295, 446335, 1128965, 3838481, 19192405]

約数ペア:

[(1, 19192405), (5, 3838481), (17, 1128965), (43, 446335), (59, 325295), (85, 225793), (89, 215645), (215, 89267), (295, 65059), (445, 43129), (731, 26255), (1003, 19135), (1513, 12685), (2537, 7565), (3655, 5251), (3827, 5015)]