21207472

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:99

約数の個数: 120

約数和(自身を含む): 52282368

約数和(自身を除く): 31074896

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 23, 26, 31, 44, 46, 52, 62, 88, 92, 104, 124, 143, 169, 176, 184, 208, 248, 253, 286, 299, 338, 341, 368, 403, 496, 506, 572, 598, 676, 682, 713, 806, 1012, 1144, 1196, 1352, 1364, 1426, 1612, 1859, 2024, 2288, 2392, 2704, 2728, 2852, 3224, 3289, 3718, 3887, 4048, 4433, 4784, 5239, 5456, 5704, 6448, 6578, 7436, 7774, 7843, 8866, 9269, 10478, 11408, 13156, 14872, 15548, 15686, 17732, 18538, 20956, 26312, 29744, 31096, 31372, 35464, 37076, 41912, 42757, 52624, 57629, 62192, 62744, 70928, 74152, 83824, 85514, 101959, 115258, 120497, 125488, 148304, 171028, 203918, 230516, 240994, 342056, 407836, 461032, 481988, 684112, 815672, 922064, 963976, 1325467, 1631344, 1927952, 2650934, 5301868, 10603736, 21207472]

約数ペア:

[(1, 21207472), (2, 10603736), (4, 5301868), (8, 2650934), (11, 1927952), (13, 1631344), (16, 1325467), (22, 963976), (23, 922064), (26, 815672), (31, 684112), (44, 481988), (46, 461032), (52, 407836), (62, 342056), (88, 240994), (92, 230516), (104, 203918), (124, 171028), (143, 148304), (169, 125488), (176, 120497), (184, 115258), (208, 101959), (248, 85514), (253, 83824), (286, 74152), (299, 70928), (338, 62744), (341, 62192), (368, 57629), (403, 52624), (496, 42757), (506, 41912), (572, 37076), (598, 35464), (676, 31372), (682, 31096), (713, 29744), (806, 26312), (1012, 20956), (1144, 18538), (1196, 17732), (1352, 15686), (1364, 15548), (1426, 14872), (1612, 13156), (1859, 11408), (2024, 10478), (2288, 9269), (2392, 8866), (2704, 7843), (2728, 7774), (2852, 7436), (3224, 6578), (3289, 6448), (3718, 5704), (3887, 5456), (4048, 5239), (4433, 4784)]