21383552

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{317}}^1$

素因数の和:379

約数の個数: 64

約数和(自身を含む): 46707840

約数和(自身を除く): 25324288

約数列:

[1, 2, 4, 8, 16, 17, 31, 32, 34, 62, 64, 68, 124, 128, 136, 248, 272, 317, 496, 527, 544, 634, 992, 1054, 1088, 1268, 1984, 2108, 2176, 2536, 3968, 4216, 5072, 5389, 8432, 9827, 10144, 10778, 16864, 19654, 20288, 21556, 33728, 39308, 40576, 43112, 67456, 78616, 86224, 157232, 167059, 172448, 314464, 334118, 344896, 628928, 668236, 689792, 1257856, 1336472, 2672944, 5345888, 10691776, 21383552]

約数ペア:

[(1, 21383552), (2, 10691776), (4, 5345888), (8, 2672944), (16, 1336472), (17, 1257856), (31, 689792), (32, 668236), (34, 628928), (62, 344896), (64, 334118), (68, 314464), (124, 172448), (128, 167059), (136, 157232), (248, 86224), (272, 78616), (317, 67456), (496, 43112), (527, 40576), (544, 39308), (634, 33728), (992, 21556), (1054, 20288), (1088, 19654), (1268, 16864), (1984, 10778), (2108, 10144), (2176, 9827), (2536, 8432), (3968, 5389), (4216, 5072)]