20962480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:155

約数の個数: 160

約数和(自身を含む): 62995968

約数和(自身を除く): 42033488

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 41, 44, 55, 56, 70, 77, 80, 82, 83, 88, 110, 112, 140, 154, 164, 166, 176, 205, 220, 280, 287, 308, 328, 332, 385, 410, 415, 440, 451, 560, 574, 581, 616, 656, 664, 770, 820, 830, 880, 902, 913, 1148, 1162, 1232, 1328, 1435, 1540, 1640, 1660, 1804, 1826, 2255, 2296, 2324, 2870, 2905, 3080, 3157, 3280, 3320, 3403, 3608, 3652, 4510, 4565, 4592, 4648, 5740, 5810, 6160, 6314, 6391, 6640, 6806, 7216, 7304, 9020, 9130, 9296, 11480, 11620, 12628, 12782, 13612, 14608, 15785, 17015, 18040, 18260, 22960, 23240, 23821, 25256, 25564, 27224, 31570, 31955, 34030, 36080, 36520, 37433, 46480, 47642, 50512, 51128, 54448, 63140, 63910, 68060, 73040, 74866, 95284, 102256, 119105, 126280, 127820, 136120, 149732, 187165, 190568, 238210, 252560, 255640, 262031, 272240, 299464, 374330, 381136, 476420, 511280, 524062, 598928, 748660, 952840, 1048124, 1310155, 1497320, 1905680, 2096248, 2620310, 2994640, 4192496, 5240620, 10481240, 20962480]

約数ペア:

[(1, 20962480), (2, 10481240), (4, 5240620), (5, 4192496), (7, 2994640), (8, 2620310), (10, 2096248), (11, 1905680), (14, 1497320), (16, 1310155), (20, 1048124), (22, 952840), (28, 748660), (35, 598928), (40, 524062), (41, 511280), (44, 476420), (55, 381136), (56, 374330), (70, 299464), (77, 272240), (80, 262031), (82, 255640), (83, 252560), (88, 238210), (110, 190568), (112, 187165), (140, 149732), (154, 136120), (164, 127820), (166, 126280), (176, 119105), (205, 102256), (220, 95284), (280, 74866), (287, 73040), (308, 68060), (328, 63910), (332, 63140), (385, 54448), (410, 51128), (415, 50512), (440, 47642), (451, 46480), (560, 37433), (574, 36520), (581, 36080), (616, 34030), (656, 31955), (664, 31570), (770, 27224), (820, 25564), (830, 25256), (880, 23821), (902, 23240), (913, 22960), (1148, 18260), (1162, 18040), (1232, 17015), (1328, 15785), (1435, 14608), (1540, 13612), (1640, 12782), (1660, 12628), (1804, 11620), (1826, 11480), (2255, 9296), (2296, 9130), (2324, 9020), (2870, 7304), (2905, 7216), (3080, 6806), (3157, 6640), (3280, 6391), (3320, 6314), (3403, 6160), (3608, 5810), (3652, 5740), (4510, 4648), (4565, 4592)]