20979120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1433}}^1$

素因数の和:1510

約数の個数: 80

約数和(自身を含む): 66147552

約数和(自身を除く): 45168432

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 61, 80, 120, 122, 183, 240, 244, 305, 366, 488, 610, 732, 915, 976, 1220, 1433, 1464, 1830, 2440, 2866, 2928, 3660, 4299, 4880, 5732, 7165, 7320, 8598, 11464, 14330, 14640, 17196, 21495, 22928, 28660, 34392, 42990, 57320, 68784, 85980, 87413, 114640, 171960, 174826, 262239, 343920, 349652, 437065, 524478, 699304, 874130, 1048956, 1311195, 1398608, 1748260, 2097912, 2622390, 3496520, 4195824, 5244780, 6993040, 10489560, 20979120]

約数ペア:

[(1, 20979120), (2, 10489560), (3, 6993040), (4, 5244780), (5, 4195824), (6, 3496520), (8, 2622390), (10, 2097912), (12, 1748260), (15, 1398608), (16, 1311195), (20, 1048956), (24, 874130), (30, 699304), (40, 524478), (48, 437065), (60, 349652), (61, 343920), (80, 262239), (120, 174826), (122, 171960), (183, 114640), (240, 87413), (244, 85980), (305, 68784), (366, 57320), (488, 42990), (610, 34392), (732, 28660), (915, 22928), (976, 21495), (1220, 17196), (1433, 14640), (1464, 14330), (1830, 11464), (2440, 8598), (2866, 7320), (2928, 7165), (3660, 5732), (4299, 4880)]