40321120

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:205

約数の個数: 144

約数和(自身を含む): 114624720

約数和(自身を除く): 74303600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 49, 56, 70, 74, 80, 98, 112, 139, 140, 148, 160, 185, 196, 224, 245, 259, 278, 280, 296, 370, 392, 490, 518, 556, 560, 592, 695, 740, 784, 973, 980, 1036, 1112, 1120, 1184, 1295, 1390, 1480, 1568, 1813, 1946, 1960, 2072, 2224, 2590, 2780, 2960, 3626, 3892, 3920, 4144, 4448, 4865, 5143, 5180, 5560, 5920, 6811, 7252, 7784, 7840, 8288, 9065, 9730, 10286, 10360, 11120, 13622, 14504, 15568, 18130, 19460, 20572, 20720, 22240, 25715, 27244, 29008, 31136, 34055, 36001, 36260, 38920, 41144, 41440, 51430, 54488, 58016, 68110, 72002, 72520, 77840, 82288, 102860, 108976, 136220, 144004, 145040, 155680, 164576, 180005, 205720, 217952, 252007, 272440, 288008, 290080, 360010, 411440, 504014, 544880, 576016, 720020, 822880, 1008028, 1089760, 1152032, 1260035, 1440040, 2016056, 2520070, 2880080, 4032112, 5040140, 5760160, 8064224, 10080280, 20160560, 40321120]

約数ペア:

[(1, 40321120), (2, 20160560), (4, 10080280), (5, 8064224), (7, 5760160), (8, 5040140), (10, 4032112), (14, 2880080), (16, 2520070), (20, 2016056), (28, 1440040), (32, 1260035), (35, 1152032), (37, 1089760), (40, 1008028), (49, 822880), (56, 720020), (70, 576016), (74, 544880), (80, 504014), (98, 411440), (112, 360010), (139, 290080), (140, 288008), (148, 272440), (160, 252007), (185, 217952), (196, 205720), (224, 180005), (245, 164576), (259, 155680), (278, 145040), (280, 144004), (296, 136220), (370, 108976), (392, 102860), (490, 82288), (518, 77840), (556, 72520), (560, 72002), (592, 68110), (695, 58016), (740, 54488), (784, 51430), (973, 41440), (980, 41144), (1036, 38920), (1112, 36260), (1120, 36001), (1184, 34055), (1295, 31136), (1390, 29008), (1480, 27244), (1568, 25715), (1813, 22240), (1946, 20720), (1960, 20572), (2072, 19460), (2224, 18130), (2590, 15568), (2780, 14504), (2960, 13622), (3626, 11120), (3892, 10360), (3920, 10286), (4144, 9730), (4448, 9065), (4865, 8288), (5143, 7840), (5180, 7784), (5560, 7252), (5920, 6811)]