19902784

素因数分解:

$2^6\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1663}}^1$

素因数の和:1703

約数の個数: 56

約数和(自身を含む): 45646848

約数和(自身を除く): 25744064

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 32, 34, 44, 64, 68, 88, 136, 176, 187, 272, 352, 374, 544, 704, 748, 1088, 1496, 1663, 2992, 3326, 5984, 6652, 11968, 13304, 18293, 26608, 28271, 36586, 53216, 56542, 73172, 106432, 113084, 146344, 226168, 292688, 310981, 452336, 585376, 621962, 904672, 1170752, 1243924, 1809344, 2487848, 4975696, 9951392, 19902784]

約数ペア:

[(1, 19902784), (2, 9951392), (4, 4975696), (8, 2487848), (11, 1809344), (16, 1243924), (17, 1170752), (22, 904672), (32, 621962), (34, 585376), (44, 452336), (64, 310981), (68, 292688), (88, 226168), (136, 146344), (176, 113084), (187, 106432), (272, 73172), (352, 56542), (374, 53216), (544, 36586), (704, 28271), (748, 26608), (1088, 18293), (1496, 13304), (1663, 11968), (2992, 6652), (3326, 5984)]