18677475

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:309

約数の個数: 72

約数和(自身を含む): 37430640

約数和(自身を除く): 18753165

約数列:

[1, 3, 5, 9, 15, 17, 19, 25, 45, 51, 57, 75, 85, 95, 153, 171, 225, 255, 257, 285, 323, 425, 475, 765, 771, 855, 969, 1275, 1285, 1425, 1615, 2313, 2907, 3825, 3855, 4275, 4369, 4845, 4883, 6425, 8075, 11565, 13107, 14535, 14649, 19275, 21845, 24225, 24415, 39321, 43947, 57825, 65535, 72675, 73245, 83011, 109225, 122075, 196605, 219735, 249033, 327675, 366225, 415055, 747099, 983025, 1098675, 1245165, 2075275, 3735495, 6225825, 18677475]

約数ペア:

[(1, 18677475), (3, 6225825), (5, 3735495), (9, 2075275), (15, 1245165), (17, 1098675), (19, 983025), (25, 747099), (45, 415055), (51, 366225), (57, 327675), (75, 249033), (85, 219735), (95, 196605), (153, 122075), (171, 109225), (225, 83011), (255, 73245), (257, 72675), (285, 65535), (323, 57825), (425, 43947), (475, 39321), (765, 24415), (771, 24225), (855, 21845), (969, 19275), (1275, 14649), (1285, 14535), (1425, 13107), (1615, 11565), (2313, 8075), (2907, 6425), (3825, 4883), (3855, 4845), (4275, 4369)]