20961108

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{373}}^1$

素因数の和:613

約数の個数: 72

約数和(自身を含む): 60988928

約数和(自身を除く): 40027820

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 223, 252, 373, 446, 669, 746, 892, 1119, 1338, 1492, 1561, 2007, 2238, 2611, 2676, 3122, 3357, 4014, 4476, 4683, 5222, 6244, 6714, 7833, 8028, 9366, 10444, 13428, 14049, 15666, 18732, 23499, 28098, 31332, 46998, 56196, 83179, 93996, 166358, 249537, 332716, 499074, 582253, 748611, 998148, 1164506, 1497222, 1746759, 2329012, 2994444, 3493518, 5240277, 6987036, 10480554, 20961108]

約数ペア:

[(1, 20961108), (2, 10480554), (3, 6987036), (4, 5240277), (6, 3493518), (7, 2994444), (9, 2329012), (12, 1746759), (14, 1497222), (18, 1164506), (21, 998148), (28, 748611), (36, 582253), (42, 499074), (63, 332716), (84, 249537), (126, 166358), (223, 93996), (252, 83179), (373, 56196), (446, 46998), (669, 31332), (746, 28098), (892, 23499), (1119, 18732), (1338, 15666), (1492, 14049), (1561, 13428), (2007, 10444), (2238, 9366), (2611, 8028), (2676, 7833), (3122, 6714), (3357, 6244), (4014, 5222), (4476, 4683)]