20662880

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{971}}^1$

素因数の和:1012

約数の個数: 96

約数和(自身を含む): 58786560

約数和(自身を除く): 38123680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 160, 190, 224, 266, 280, 304, 380, 532, 560, 608, 665, 760, 971, 1064, 1120, 1330, 1520, 1942, 2128, 2660, 3040, 3884, 4256, 4855, 5320, 6797, 7768, 9710, 10640, 13594, 15536, 18449, 19420, 21280, 27188, 31072, 33985, 36898, 38840, 54376, 67970, 73796, 77680, 92245, 108752, 129143, 135940, 147592, 155360, 184490, 217504, 258286, 271880, 295184, 368980, 516572, 543760, 590368, 645715, 737960, 1033144, 1087520, 1291430, 1475920, 2066288, 2582860, 2951840, 4132576, 5165720, 10331440, 20662880]

約数ペア:

[(1, 20662880), (2, 10331440), (4, 5165720), (5, 4132576), (7, 2951840), (8, 2582860), (10, 2066288), (14, 1475920), (16, 1291430), (19, 1087520), (20, 1033144), (28, 737960), (32, 645715), (35, 590368), (38, 543760), (40, 516572), (56, 368980), (70, 295184), (76, 271880), (80, 258286), (95, 217504), (112, 184490), (133, 155360), (140, 147592), (152, 135940), (160, 129143), (190, 108752), (224, 92245), (266, 77680), (280, 73796), (304, 67970), (380, 54376), (532, 38840), (560, 36898), (608, 33985), (665, 31072), (760, 27188), (971, 21280), (1064, 19420), (1120, 18449), (1330, 15536), (1520, 13594), (1942, 10640), (2128, 9710), (2660, 7768), (3040, 6797), (3884, 5320), (4256, 4855)]