66705920

素因数分解:

$2^9\times 5^1\times {\mathrm{71}}^1\times {\mathrm{367}}^1$

素因数の和:461

約数の個数: 80

約数和(自身を含む): 162632448

約数和(自身を除く): 95926528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 256, 284, 320, 355, 367, 512, 568, 640, 710, 734, 1136, 1280, 1420, 1468, 1835, 2272, 2560, 2840, 2936, 3670, 4544, 5680, 5872, 7340, 9088, 11360, 11744, 14680, 18176, 22720, 23488, 26057, 29360, 36352, 45440, 46976, 52114, 58720, 90880, 93952, 104228, 117440, 130285, 181760, 187904, 208456, 234880, 260570, 416912, 469760, 521140, 833824, 939520, 1042280, 1667648, 2084560, 3335296, 4169120, 6670592, 8338240, 13341184, 16676480, 33352960, 66705920]

約数ペア:

[(1, 66705920), (2, 33352960), (4, 16676480), (5, 13341184), (8, 8338240), (10, 6670592), (16, 4169120), (20, 3335296), (32, 2084560), (40, 1667648), (64, 1042280), (71, 939520), (80, 833824), (128, 521140), (142, 469760), (160, 416912), (256, 260570), (284, 234880), (320, 208456), (355, 187904), (367, 181760), (512, 130285), (568, 117440), (640, 104228), (710, 93952), (734, 90880), (1136, 58720), (1280, 52114), (1420, 46976), (1468, 45440), (1835, 36352), (2272, 29360), (2560, 26057), (2840, 23488), (2936, 22720), (3670, 18176), (4544, 14680), (5680, 11744), (5872, 11360), (7340, 9088)]