19800816

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1901}}^1$

素因数の和:1950

約数の個数: 80

約数和(自身を含む): 60377088

約数和(自身を除く): 40576272

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 31, 42, 48, 56, 62, 84, 93, 112, 124, 168, 186, 217, 248, 336, 372, 434, 496, 651, 744, 868, 1302, 1488, 1736, 1901, 2604, 3472, 3802, 5208, 5703, 7604, 10416, 11406, 13307, 15208, 22812, 26614, 30416, 39921, 45624, 53228, 58931, 79842, 91248, 106456, 117862, 159684, 176793, 212912, 235724, 319368, 353586, 412517, 471448, 638736, 707172, 825034, 942896, 1237551, 1414344, 1650068, 2475102, 2828688, 3300136, 4950204, 6600272, 9900408, 19800816]

約数ペア:

[(1, 19800816), (2, 9900408), (3, 6600272), (4, 4950204), (6, 3300136), (7, 2828688), (8, 2475102), (12, 1650068), (14, 1414344), (16, 1237551), (21, 942896), (24, 825034), (28, 707172), (31, 638736), (42, 471448), (48, 412517), (56, 353586), (62, 319368), (84, 235724), (93, 212912), (112, 176793), (124, 159684), (168, 117862), (186, 106456), (217, 91248), (248, 79842), (336, 58931), (372, 53228), (434, 45624), (496, 39921), (651, 30416), (744, 26614), (868, 22812), (1302, 15208), (1488, 13307), (1736, 11406), (1901, 10416), (2604, 7604), (3472, 5703), (3802, 5208)]