19660788

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1279}}^1$

素因数の和:1357

約数の個数: 72

約数和(自身を含む): 57774080

約数和(自身を除く): 38113292

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 61, 63, 84, 122, 126, 183, 244, 252, 366, 427, 549, 732, 854, 1098, 1279, 1281, 1708, 2196, 2558, 2562, 3837, 3843, 5116, 5124, 7674, 7686, 8953, 11511, 15348, 15372, 17906, 23022, 26859, 35812, 46044, 53718, 78019, 80577, 107436, 156038, 161154, 234057, 312076, 322308, 468114, 546133, 702171, 936228, 1092266, 1404342, 1638399, 2184532, 2808684, 3276798, 4915197, 6553596, 9830394, 19660788]

約数ペア:

[(1, 19660788), (2, 9830394), (3, 6553596), (4, 4915197), (6, 3276798), (7, 2808684), (9, 2184532), (12, 1638399), (14, 1404342), (18, 1092266), (21, 936228), (28, 702171), (36, 546133), (42, 468114), (61, 322308), (63, 312076), (84, 234057), (122, 161154), (126, 156038), (183, 107436), (244, 80577), (252, 78019), (366, 53718), (427, 46044), (549, 35812), (732, 26859), (854, 23022), (1098, 17906), (1279, 15372), (1281, 15348), (1708, 11511), (2196, 8953), (2558, 7686), (2562, 7674), (3837, 5124), (3843, 5116)]