19780956

素因数分解:

$2^2\times 3^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{193}}^1$

素因数の和:292

約数の個数: 96

約数和(自身を含む): 56275520

約数和(自身を除く): 36494564

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 73, 78, 108, 117, 146, 156, 193, 219, 234, 292, 351, 386, 438, 468, 579, 657, 702, 772, 876, 949, 1158, 1314, 1404, 1737, 1898, 1971, 2316, 2509, 2628, 2847, 3474, 3796, 3942, 5018, 5211, 5694, 6948, 7527, 7884, 8541, 10036, 10422, 11388, 14089, 15054, 17082, 20844, 22581, 25623, 28178, 30108, 34164, 42267, 45162, 51246, 56356, 67743, 84534, 90324, 102492, 126801, 135486, 169068, 183157, 253602, 270972, 366314, 380403, 507204, 549471, 732628, 760806, 1098942, 1521612, 1648413, 2197884, 3296826, 4945239, 6593652, 9890478, 19780956]

約数ペア:

[(1, 19780956), (2, 9890478), (3, 6593652), (4, 4945239), (6, 3296826), (9, 2197884), (12, 1648413), (13, 1521612), (18, 1098942), (26, 760806), (27, 732628), (36, 549471), (39, 507204), (52, 380403), (54, 366314), (73, 270972), (78, 253602), (108, 183157), (117, 169068), (146, 135486), (156, 126801), (193, 102492), (219, 90324), (234, 84534), (292, 67743), (351, 56356), (386, 51246), (438, 45162), (468, 42267), (579, 34164), (657, 30108), (702, 28178), (772, 25623), (876, 22581), (949, 20844), (1158, 17082), (1314, 15054), (1404, 14089), (1737, 11388), (1898, 10422), (1971, 10036), (2316, 8541), (2509, 7884), (2628, 7527), (2847, 6948), (3474, 5694), (3796, 5211), (3942, 5018)]