13405840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{647}}^1$

素因数の和:704

約数の個数: 80

約数和(自身を含む): 36640512

約数和(自身を除く): 23234672

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 56, 70, 74, 80, 112, 140, 148, 185, 259, 280, 296, 370, 518, 560, 592, 647, 740, 1036, 1294, 1295, 1480, 2072, 2588, 2590, 2960, 3235, 4144, 4529, 5176, 5180, 6470, 9058, 10352, 10360, 12940, 18116, 20720, 22645, 23939, 25880, 36232, 45290, 47878, 51760, 72464, 90580, 95756, 119695, 167573, 181160, 191512, 239390, 335146, 362320, 383024, 478780, 670292, 837865, 957560, 1340584, 1675730, 1915120, 2681168, 3351460, 6702920, 13405840]

約数ペア:

[(1, 13405840), (2, 6702920), (4, 3351460), (5, 2681168), (7, 1915120), (8, 1675730), (10, 1340584), (14, 957560), (16, 837865), (20, 670292), (28, 478780), (35, 383024), (37, 362320), (40, 335146), (56, 239390), (70, 191512), (74, 181160), (80, 167573), (112, 119695), (140, 95756), (148, 90580), (185, 72464), (259, 51760), (280, 47878), (296, 45290), (370, 36232), (518, 25880), (560, 23939), (592, 22645), (647, 20720), (740, 18116), (1036, 12940), (1294, 10360), (1295, 10352), (1480, 9058), (2072, 6470), (2588, 5180), (2590, 5176), (2960, 4529), (3235, 4144)]