20908020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{743}}^1$

素因数の和:829

約数の個数: 96

約数和(自身を含む): 67995648

約数和(自身を除く): 47087628

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 67, 70, 84, 105, 134, 140, 201, 210, 268, 335, 402, 420, 469, 670, 743, 804, 938, 1005, 1340, 1407, 1486, 1876, 2010, 2229, 2345, 2814, 2972, 3715, 4020, 4458, 4690, 5201, 5628, 7035, 7430, 8916, 9380, 10402, 11145, 14070, 14860, 15603, 20804, 22290, 26005, 28140, 31206, 44580, 49781, 52010, 62412, 78015, 99562, 104020, 149343, 156030, 199124, 248905, 298686, 312060, 348467, 497810, 597372, 696934, 746715, 995620, 1045401, 1393868, 1493430, 1742335, 2090802, 2986860, 3484670, 4181604, 5227005, 6969340, 10454010, 20908020]

約数ペア:

[(1, 20908020), (2, 10454010), (3, 6969340), (4, 5227005), (5, 4181604), (6, 3484670), (7, 2986860), (10, 2090802), (12, 1742335), (14, 1493430), (15, 1393868), (20, 1045401), (21, 995620), (28, 746715), (30, 696934), (35, 597372), (42, 497810), (60, 348467), (67, 312060), (70, 298686), (84, 248905), (105, 199124), (134, 156030), (140, 149343), (201, 104020), (210, 99562), (268, 78015), (335, 62412), (402, 52010), (420, 49781), (469, 44580), (670, 31206), (743, 28140), (804, 26005), (938, 22290), (1005, 20804), (1340, 15603), (1407, 14860), (1486, 14070), (1876, 11145), (2010, 10402), (2229, 9380), (2345, 8916), (2814, 7430), (2972, 7035), (3715, 5628), (4020, 5201), (4458, 4690)]