18870225

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 34551360

約数和(自身を除く): 15681135

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 89, 165, 257, 267, 275, 445, 771, 825, 979, 1285, 1335, 2225, 2827, 2937, 3855, 4895, 6425, 6675, 8481, 14135, 14685, 19275, 22873, 24475, 42405, 68619, 70675, 73425, 114365, 212025, 251603, 343095, 571825, 754809, 1258015, 1715475, 3774045, 6290075, 18870225]

約数ペア:

[(1, 18870225), (3, 6290075), (5, 3774045), (11, 1715475), (15, 1258015), (25, 754809), (33, 571825), (55, 343095), (75, 251603), (89, 212025), (165, 114365), (257, 73425), (267, 70675), (275, 68619), (445, 42405), (771, 24475), (825, 22873), (979, 19275), (1285, 14685), (1335, 14135), (2225, 8481), (2827, 6675), (2937, 6425), (3855, 4895)]