20844320

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{503}}^1$

素因数の和:562

約数の個数: 96

約数和(自身を含む): 57915648

約数和(自身を除く): 37071328

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 56, 70, 74, 80, 112, 140, 148, 160, 185, 224, 259, 280, 296, 370, 503, 518, 560, 592, 740, 1006, 1036, 1120, 1184, 1295, 1480, 2012, 2072, 2515, 2590, 2960, 3521, 4024, 4144, 5030, 5180, 5920, 7042, 8048, 8288, 10060, 10360, 14084, 16096, 17605, 18611, 20120, 20720, 28168, 35210, 37222, 40240, 41440, 56336, 70420, 74444, 80480, 93055, 112672, 130277, 140840, 148888, 186110, 260554, 281680, 297776, 372220, 521108, 563360, 595552, 651385, 744440, 1042216, 1302770, 1488880, 2084432, 2605540, 2977760, 4168864, 5211080, 10422160, 20844320]

約数ペア:

[(1, 20844320), (2, 10422160), (4, 5211080), (5, 4168864), (7, 2977760), (8, 2605540), (10, 2084432), (14, 1488880), (16, 1302770), (20, 1042216), (28, 744440), (32, 651385), (35, 595552), (37, 563360), (40, 521108), (56, 372220), (70, 297776), (74, 281680), (80, 260554), (112, 186110), (140, 148888), (148, 140840), (160, 130277), (185, 112672), (224, 93055), (259, 80480), (280, 74444), (296, 70420), (370, 56336), (503, 41440), (518, 40240), (560, 37222), (592, 35210), (740, 28168), (1006, 20720), (1036, 20120), (1120, 18611), (1184, 17605), (1295, 16096), (1480, 14084), (2012, 10360), (2072, 10060), (2515, 8288), (2590, 8048), (2960, 7042), (3521, 5920), (4024, 5180), (4144, 5030)]