19901616

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{971}}^1$

素因数の和:1050

約数の個数: 80

約数和(自身を含む): 59781888

約数和(自身を除く): 39880272

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 61, 84, 112, 122, 168, 183, 244, 336, 366, 427, 488, 732, 854, 971, 976, 1281, 1464, 1708, 1942, 2562, 2913, 2928, 3416, 3884, 5124, 5826, 6797, 6832, 7768, 10248, 11652, 13594, 15536, 20391, 20496, 23304, 27188, 40782, 46608, 54376, 59231, 81564, 108752, 118462, 163128, 177693, 236924, 326256, 355386, 414617, 473848, 710772, 829234, 947696, 1243851, 1421544, 1658468, 2487702, 2843088, 3316936, 4975404, 6633872, 9950808, 19901616]

約数ペア:

[(1, 19901616), (2, 9950808), (3, 6633872), (4, 4975404), (6, 3316936), (7, 2843088), (8, 2487702), (12, 1658468), (14, 1421544), (16, 1243851), (21, 947696), (24, 829234), (28, 710772), (42, 473848), (48, 414617), (56, 355386), (61, 326256), (84, 236924), (112, 177693), (122, 163128), (168, 118462), (183, 108752), (244, 81564), (336, 59231), (366, 54376), (427, 46608), (488, 40782), (732, 27188), (854, 23304), (971, 20496), (976, 20391), (1281, 15536), (1464, 13594), (1708, 11652), (1942, 10248), (2562, 7768), (2913, 6832), (2928, 6797), (3416, 5826), (3884, 5124)]