20901650

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:180

約数の個数: 96

約数和(自身を含む): 49818240

約数和(自身を除く): 28916590

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 61, 70, 77, 89, 110, 122, 154, 175, 178, 275, 305, 350, 385, 427, 445, 550, 610, 623, 671, 770, 854, 890, 979, 1246, 1342, 1525, 1925, 1958, 2135, 2225, 3050, 3115, 3355, 3850, 4270, 4450, 4697, 4895, 5429, 6230, 6710, 6853, 9394, 9790, 10675, 10858, 13706, 15575, 16775, 21350, 23485, 24475, 27145, 31150, 33550, 34265, 38003, 46970, 48950, 54290, 59719, 68530, 76006, 117425, 119438, 135725, 171325, 190015, 234850, 271450, 298595, 342650, 380030, 418033, 597190, 836066, 950075, 1492975, 1900150, 2090165, 2985950, 4180330, 10450825, 20901650]

約数ペア:

[(1, 20901650), (2, 10450825), (5, 4180330), (7, 2985950), (10, 2090165), (11, 1900150), (14, 1492975), (22, 950075), (25, 836066), (35, 597190), (50, 418033), (55, 380030), (61, 342650), (70, 298595), (77, 271450), (89, 234850), (110, 190015), (122, 171325), (154, 135725), (175, 119438), (178, 117425), (275, 76006), (305, 68530), (350, 59719), (385, 54290), (427, 48950), (445, 46970), (550, 38003), (610, 34265), (623, 33550), (671, 31150), (770, 27145), (854, 24475), (890, 23485), (979, 21350), (1246, 16775), (1342, 15575), (1525, 13706), (1925, 10858), (1958, 10675), (2135, 9790), (2225, 9394), (3050, 6853), (3115, 6710), (3355, 6230), (3850, 5429), (4270, 4895), (4450, 4697)]