20145225

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 35751680

約数和(自身を除く): 15606455

約数列:

[1, 3, 5, 15, 19, 25, 57, 67, 75, 95, 201, 211, 285, 335, 475, 633, 1005, 1055, 1273, 1425, 1675, 3165, 3819, 4009, 5025, 5275, 6365, 12027, 14137, 15825, 19095, 20045, 31825, 42411, 60135, 70685, 95475, 100225, 212055, 268603, 300675, 353425, 805809, 1060275, 1343015, 4029045, 6715075, 20145225]

約数ペア:

[(1, 20145225), (3, 6715075), (5, 4029045), (15, 1343015), (19, 1060275), (25, 805809), (57, 353425), (67, 300675), (75, 268603), (95, 212055), (201, 100225), (211, 95475), (285, 70685), (335, 60135), (475, 42411), (633, 31825), (1005, 20045), (1055, 19095), (1273, 15825), (1425, 14137), (1675, 12027), (3165, 6365), (3819, 5275), (4009, 5025)]