257683520

素因数分解:

$2^6\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:428

約数の個数: 112

約数和(自身を含む): 640250688

約数和(自身を除く): 382567168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 61, 64, 80, 86, 122, 160, 172, 215, 244, 305, 307, 320, 344, 430, 488, 610, 614, 688, 860, 976, 1220, 1228, 1376, 1535, 1720, 1952, 2440, 2456, 2623, 2752, 3070, 3440, 3904, 4880, 4912, 5246, 6140, 6880, 9760, 9824, 10492, 12280, 13115, 13201, 13760, 18727, 19520, 19648, 20984, 24560, 26230, 26402, 37454, 41968, 49120, 52460, 52804, 66005, 74908, 83936, 93635, 98240, 104920, 105608, 132010, 149816, 167872, 187270, 209840, 211216, 264020, 299632, 374540, 419680, 422432, 528040, 599264, 749080, 805261, 839360, 844864, 1056080, 1198528, 1498160, 1610522, 2112160, 2996320, 3221044, 4026305, 4224320, 5992640, 6442088, 8052610, 12884176, 16105220, 25768352, 32210440, 51536704, 64420880, 128841760, 257683520]

約数ペア:

[(1, 257683520), (2, 128841760), (4, 64420880), (5, 51536704), (8, 32210440), (10, 25768352), (16, 16105220), (20, 12884176), (32, 8052610), (40, 6442088), (43, 5992640), (61, 4224320), (64, 4026305), (80, 3221044), (86, 2996320), (122, 2112160), (160, 1610522), (172, 1498160), (215, 1198528), (244, 1056080), (305, 844864), (307, 839360), (320, 805261), (344, 749080), (430, 599264), (488, 528040), (610, 422432), (614, 419680), (688, 374540), (860, 299632), (976, 264020), (1220, 211216), (1228, 209840), (1376, 187270), (1535, 167872), (1720, 149816), (1952, 132010), (2440, 105608), (2456, 104920), (2623, 98240), (2752, 93635), (3070, 83936), (3440, 74908), (3904, 66005), (4880, 52804), (4912, 52460), (5246, 49120), (6140, 41968), (6880, 37454), (9760, 26402), (9824, 26230), (10492, 24560), (12280, 20984), (13115, 19648), (13201, 19520), (13760, 18727)]