831231680

素因数分解:

$2^6\times 5^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1$

素因数の和:478

約数の個数: 112

約数和(自身を含む): 2027773440

約数和(自身を除く): 1196541760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 131, 158, 160, 251, 262, 316, 320, 395, 502, 524, 632, 655, 790, 1004, 1048, 1255, 1264, 1310, 1580, 2008, 2096, 2510, 2528, 2620, 3160, 4016, 4192, 5020, 5056, 5240, 6320, 8032, 8384, 10040, 10349, 10480, 12640, 16064, 19829, 20080, 20698, 20960, 25280, 32881, 39658, 40160, 41396, 41920, 51745, 65762, 79316, 80320, 82792, 99145, 103490, 131524, 158632, 164405, 165584, 198290, 206980, 263048, 317264, 328810, 331168, 396580, 413960, 526096, 634528, 657620, 662336, 793160, 827920, 1052192, 1269056, 1315240, 1586320, 1655840, 2104384, 2597599, 2630480, 3172640, 3311680, 5195198, 5260960, 6345280, 10390396, 10521920, 12987995, 20780792, 25975990, 41561584, 51951980, 83123168, 103903960, 166246336, 207807920, 415615840, 831231680]

約数ペア:

[(1, 831231680), (2, 415615840), (4, 207807920), (5, 166246336), (8, 103903960), (10, 83123168), (16, 51951980), (20, 41561584), (32, 25975990), (40, 20780792), (64, 12987995), (79, 10521920), (80, 10390396), (131, 6345280), (158, 5260960), (160, 5195198), (251, 3311680), (262, 3172640), (316, 2630480), (320, 2597599), (395, 2104384), (502, 1655840), (524, 1586320), (632, 1315240), (655, 1269056), (790, 1052192), (1004, 827920), (1048, 793160), (1255, 662336), (1264, 657620), (1310, 634528), (1580, 526096), (2008, 413960), (2096, 396580), (2510, 331168), (2528, 328810), (2620, 317264), (3160, 263048), (4016, 206980), (4192, 198290), (5020, 165584), (5056, 164405), (5240, 158632), (6320, 131524), (8032, 103490), (8384, 99145), (10040, 82792), (10349, 80320), (10480, 79316), (12640, 65762), (16064, 51745), (19829, 41920), (20080, 41396), (20698, 40160), (20960, 39658), (25280, 32881)]