18450975

素因数分解:

$3^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 32135840

約数和(自身を除く): 13684865

約数列:

[1, 3, 5, 15, 25, 37, 61, 75, 109, 111, 183, 185, 305, 327, 545, 555, 915, 925, 1525, 1635, 2257, 2725, 2775, 4033, 4575, 6649, 6771, 8175, 11285, 12099, 19947, 20165, 33245, 33855, 56425, 60495, 99735, 100825, 166225, 169275, 246013, 302475, 498675, 738039, 1230065, 3690195, 6150325, 18450975]

約数ペア:

[(1, 18450975), (3, 6150325), (5, 3690195), (15, 1230065), (25, 738039), (37, 498675), (61, 302475), (75, 246013), (109, 169275), (111, 166225), (183, 100825), (185, 99735), (305, 60495), (327, 56425), (545, 33855), (555, 33245), (915, 20165), (925, 19947), (1525, 12099), (1635, 11285), (2257, 8175), (2725, 6771), (2775, 6649), (4033, 4575)]