19807125

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1$

素因数の和:287

約数の個数: 64

約数和(自身を含む): 37739520

約数和(自身を除く): 17932395

約数列:

[1, 3, 5, 13, 15, 17, 25, 39, 51, 65, 75, 85, 125, 195, 221, 239, 255, 325, 375, 425, 663, 717, 975, 1105, 1195, 1275, 1625, 2125, 3107, 3315, 3585, 4063, 4875, 5525, 5975, 6375, 9321, 12189, 15535, 16575, 17925, 20315, 27625, 29875, 46605, 52819, 60945, 77675, 82875, 89625, 101575, 158457, 233025, 264095, 304725, 388375, 507875, 792285, 1165125, 1320475, 1523625, 3961425, 6602375, 19807125]

約数ペア:

[(1, 19807125), (3, 6602375), (5, 3961425), (13, 1523625), (15, 1320475), (17, 1165125), (25, 792285), (39, 507875), (51, 388375), (65, 304725), (75, 264095), (85, 233025), (125, 158457), (195, 101575), (221, 89625), (239, 82875), (255, 77675), (325, 60945), (375, 52819), (425, 46605), (663, 29875), (717, 27625), (975, 20315), (1105, 17925), (1195, 16575), (1275, 15535), (1625, 12189), (2125, 9321), (3107, 6375), (3315, 5975), (3585, 5525), (4063, 4875)]