649348520

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{271}}^1\times {\mathrm{1619}}^1$

素因数の和:1938

約数の個数: 64

約数和(自身を含む): 1506988800

約数和(自身を除く): 857640280

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 271, 296, 370, 542, 740, 1084, 1355, 1480, 1619, 2168, 2710, 3238, 5420, 6476, 8095, 10027, 10840, 12952, 16190, 20054, 32380, 40108, 50135, 59903, 64760, 80216, 100270, 119806, 200540, 239612, 299515, 401080, 438749, 479224, 599030, 877498, 1198060, 1754996, 2193745, 2396120, 3509992, 4387490, 8774980, 16233713, 17549960, 32467426, 64934852, 81168565, 129869704, 162337130, 324674260, 649348520]

約数ペア:

[(1, 649348520), (2, 324674260), (4, 162337130), (5, 129869704), (8, 81168565), (10, 64934852), (20, 32467426), (37, 17549960), (40, 16233713), (74, 8774980), (148, 4387490), (185, 3509992), (271, 2396120), (296, 2193745), (370, 1754996), (542, 1198060), (740, 877498), (1084, 599030), (1355, 479224), (1480, 438749), (1619, 401080), (2168, 299515), (2710, 239612), (3238, 200540), (5420, 119806), (6476, 100270), (8095, 80216), (10027, 64760), (10840, 59903), (12952, 50135), (16190, 40108), (20054, 32380)]