20258910

素因数分解:

$2^1\times 3^6\times 5^1\times 7^1\times {\mathrm{397}}^1$

素因数の和:429

約数の個数: 112

約数和(自身を含む): 62642016

約数和(自身を除く): 42383106

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 81, 90, 105, 126, 135, 162, 189, 210, 243, 270, 315, 378, 397, 405, 486, 567, 630, 729, 794, 810, 945, 1134, 1191, 1215, 1458, 1701, 1890, 1985, 2382, 2430, 2779, 2835, 3402, 3573, 3645, 3970, 5103, 5558, 5670, 5955, 7146, 7290, 8337, 8505, 10206, 10719, 11910, 13895, 16674, 17010, 17865, 21438, 25011, 25515, 27790, 32157, 35730, 41685, 50022, 51030, 53595, 64314, 75033, 83370, 96471, 107190, 125055, 150066, 160785, 192942, 225099, 250110, 289413, 321570, 375165, 450198, 482355, 578826, 675297, 750330, 964710, 1125495, 1350594, 1447065, 2025891, 2250990, 2894130, 3376485, 4051782, 6752970, 10129455, 20258910]

約数ペア:

[(1, 20258910), (2, 10129455), (3, 6752970), (5, 4051782), (6, 3376485), (7, 2894130), (9, 2250990), (10, 2025891), (14, 1447065), (15, 1350594), (18, 1125495), (21, 964710), (27, 750330), (30, 675297), (35, 578826), (42, 482355), (45, 450198), (54, 375165), (63, 321570), (70, 289413), (81, 250110), (90, 225099), (105, 192942), (126, 160785), (135, 150066), (162, 125055), (189, 107190), (210, 96471), (243, 83370), (270, 75033), (315, 64314), (378, 53595), (397, 51030), (405, 50022), (486, 41685), (567, 35730), (630, 32157), (729, 27790), (794, 25515), (810, 25011), (945, 21438), (1134, 17865), (1191, 17010), (1215, 16674), (1458, 13895), (1701, 11910), (1890, 10719), (1985, 10206), (2382, 8505), (2430, 8337), (2779, 7290), (2835, 7146), (3402, 5955), (3573, 5670), (3645, 5558), (3970, 5103)]