28557320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1583}}^1$

素因数の和:1646

約数の個数: 64

約数和(自身を含む): 71850240

約数和(自身を除く): 43292920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 164, 205, 220, 328, 410, 440, 451, 820, 902, 1583, 1640, 1804, 2255, 3166, 3608, 4510, 6332, 7915, 9020, 12664, 15830, 17413, 18040, 31660, 34826, 63320, 64903, 69652, 87065, 129806, 139304, 174130, 259612, 324515, 348260, 519224, 649030, 696520, 713933, 1298060, 1427866, 2596120, 2855732, 3569665, 5711464, 7139330, 14278660, 28557320]

約数ペア:

[(1, 28557320), (2, 14278660), (4, 7139330), (5, 5711464), (8, 3569665), (10, 2855732), (11, 2596120), (20, 1427866), (22, 1298060), (40, 713933), (41, 696520), (44, 649030), (55, 519224), (82, 348260), (88, 324515), (110, 259612), (164, 174130), (205, 139304), (220, 129806), (328, 87065), (410, 69652), (440, 64903), (451, 63320), (820, 34826), (902, 31660), (1583, 18040), (1640, 17413), (1804, 15830), (2255, 12664), (3166, 9020), (3608, 7915), (4510, 6332)]