78190280

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:212

約数の個数: 128

約数和(自身を含む): 211680000

約数和(自身を除く): 133489720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 49, 56, 70, 82, 98, 139, 140, 164, 196, 205, 245, 278, 280, 287, 328, 343, 392, 410, 490, 556, 574, 686, 695, 820, 973, 980, 1112, 1148, 1372, 1390, 1435, 1640, 1715, 1946, 1960, 2009, 2296, 2744, 2780, 2870, 3430, 3892, 4018, 4865, 5560, 5699, 5740, 6811, 6860, 7784, 8036, 9730, 10045, 11398, 11480, 13622, 13720, 14063, 16072, 19460, 20090, 22796, 27244, 28126, 28495, 34055, 38920, 39893, 40180, 45592, 47677, 54488, 56252, 56990, 68110, 70315, 79786, 80360, 95354, 112504, 113980, 136220, 140630, 159572, 190708, 199465, 227960, 238385, 272440, 279251, 281260, 319144, 381416, 398930, 476770, 558502, 562520, 797860, 953540, 1117004, 1396255, 1595720, 1907080, 1954757, 2234008, 2792510, 3909514, 5585020, 7819028, 9773785, 11170040, 15638056, 19547570, 39095140, 78190280]

約数ペア:

[(1, 78190280), (2, 39095140), (4, 19547570), (5, 15638056), (7, 11170040), (8, 9773785), (10, 7819028), (14, 5585020), (20, 3909514), (28, 2792510), (35, 2234008), (40, 1954757), (41, 1907080), (49, 1595720), (56, 1396255), (70, 1117004), (82, 953540), (98, 797860), (139, 562520), (140, 558502), (164, 476770), (196, 398930), (205, 381416), (245, 319144), (278, 281260), (280, 279251), (287, 272440), (328, 238385), (343, 227960), (392, 199465), (410, 190708), (490, 159572), (556, 140630), (574, 136220), (686, 113980), (695, 112504), (820, 95354), (973, 80360), (980, 79786), (1112, 70315), (1148, 68110), (1372, 56990), (1390, 56252), (1435, 54488), (1640, 47677), (1715, 45592), (1946, 40180), (1960, 39893), (2009, 38920), (2296, 34055), (2744, 28495), (2780, 28126), (2870, 27244), (3430, 22796), (3892, 20090), (4018, 19460), (4865, 16072), (5560, 14063), (5699, 13720), (5740, 13622), (6811, 11480), (6860, 11398), (7784, 10045), (8036, 9730)]