19996956

素因数分解:

$2^2\times 3^5\times 7^1\times {\mathrm{2939}}^1$

素因数の和:2965

約数の個数: 72

約数和(自身を含む): 59928960

約数和(自身を除く): 39932004

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 81, 84, 108, 126, 162, 189, 243, 252, 324, 378, 486, 567, 756, 972, 1134, 1701, 2268, 2939, 3402, 5878, 6804, 8817, 11756, 17634, 20573, 26451, 35268, 41146, 52902, 61719, 79353, 82292, 105804, 123438, 158706, 185157, 238059, 246876, 317412, 370314, 476118, 555471, 714177, 740628, 952236, 1110942, 1428354, 1666413, 2221884, 2856708, 3332826, 4999239, 6665652, 9998478, 19996956]

約数ペア:

[(1, 19996956), (2, 9998478), (3, 6665652), (4, 4999239), (6, 3332826), (7, 2856708), (9, 2221884), (12, 1666413), (14, 1428354), (18, 1110942), (21, 952236), (27, 740628), (28, 714177), (36, 555471), (42, 476118), (54, 370314), (63, 317412), (81, 246876), (84, 238059), (108, 185157), (126, 158706), (162, 123438), (189, 105804), (243, 82292), (252, 79353), (324, 61719), (378, 52902), (486, 41146), (567, 35268), (756, 26451), (972, 20573), (1134, 17634), (1701, 11756), (2268, 8817), (2939, 6804), (3402, 5878)]