20275640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1$

素因数の和:285

約数の個数: 128

約数和(自身を含む): 59097600

約数和(自身を除く): 38821960

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 29, 35, 40, 44, 55, 56, 58, 70, 77, 88, 110, 116, 140, 145, 154, 203, 220, 227, 232, 280, 290, 308, 319, 385, 406, 440, 454, 580, 616, 638, 770, 812, 908, 1015, 1135, 1160, 1276, 1540, 1589, 1595, 1624, 1816, 2030, 2233, 2270, 2497, 2552, 3080, 3178, 3190, 4060, 4466, 4540, 4994, 6356, 6380, 6583, 7945, 8120, 8932, 9080, 9988, 11165, 12485, 12712, 12760, 13166, 15890, 17479, 17864, 19976, 22330, 24970, 26332, 31780, 32915, 34958, 44660, 46081, 49940, 52664, 63560, 65830, 69916, 72413, 87395, 89320, 92162, 99880, 131660, 139832, 144826, 174790, 184324, 230405, 263320, 289652, 349580, 362065, 368648, 460810, 506891, 579304, 699160, 724130, 921620, 1013782, 1448260, 1843240, 2027564, 2534455, 2896520, 4055128, 5068910, 10137820, 20275640]

約数ペア:

[(1, 20275640), (2, 10137820), (4, 5068910), (5, 4055128), (7, 2896520), (8, 2534455), (10, 2027564), (11, 1843240), (14, 1448260), (20, 1013782), (22, 921620), (28, 724130), (29, 699160), (35, 579304), (40, 506891), (44, 460810), (55, 368648), (56, 362065), (58, 349580), (70, 289652), (77, 263320), (88, 230405), (110, 184324), (116, 174790), (140, 144826), (145, 139832), (154, 131660), (203, 99880), (220, 92162), (227, 89320), (232, 87395), (280, 72413), (290, 69916), (308, 65830), (319, 63560), (385, 52664), (406, 49940), (440, 46081), (454, 44660), (580, 34958), (616, 32915), (638, 31780), (770, 26332), (812, 24970), (908, 22330), (1015, 19976), (1135, 17864), (1160, 17479), (1276, 15890), (1540, 13166), (1589, 12760), (1595, 12712), (1624, 12485), (1816, 11165), (2030, 9988), (2233, 9080), (2270, 8932), (2497, 8120), (2552, 7945), (3080, 6583), (3178, 6380), (3190, 6356), (4060, 4994), (4466, 4540)]