20457504

素因数分解:

$2^5\times 3^2\times {\mathrm{251}}^1\times {\mathrm{283}}^1$

素因数の和:550

約数の個数: 72

約数和(自身を含む): 58614192

約数和(自身を除く): 38156688

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 251, 283, 288, 502, 566, 753, 849, 1004, 1132, 1506, 1698, 2008, 2259, 2264, 2547, 3012, 3396, 4016, 4518, 4528, 5094, 6024, 6792, 8032, 9036, 9056, 10188, 12048, 13584, 18072, 20376, 24096, 27168, 36144, 40752, 71033, 72288, 81504, 142066, 213099, 284132, 426198, 568264, 639297, 852396, 1136528, 1278594, 1704792, 2273056, 2557188, 3409584, 5114376, 6819168, 10228752, 20457504]

約数ペア:

[(1, 20457504), (2, 10228752), (3, 6819168), (4, 5114376), (6, 3409584), (8, 2557188), (9, 2273056), (12, 1704792), (16, 1278594), (18, 1136528), (24, 852396), (32, 639297), (36, 568264), (48, 426198), (72, 284132), (96, 213099), (144, 142066), (251, 81504), (283, 72288), (288, 71033), (502, 40752), (566, 36144), (753, 27168), (849, 24096), (1004, 20376), (1132, 18072), (1506, 13584), (1698, 12048), (2008, 10188), (2259, 9056), (2264, 9036), (2547, 8032), (3012, 6792), (3396, 6024), (4016, 5094), (4518, 4528)]