21378112

素因数分解:

$2^6\times 7^2\times {\mathrm{17}}^1\times {\mathrm{401}}^1$

素因数の和:444

約数の個数: 84

約数和(自身を含む): 52381404

約数和(自身を除く): 31003292

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 49, 56, 64, 68, 98, 112, 119, 136, 196, 224, 238, 272, 392, 401, 448, 476, 544, 784, 802, 833, 952, 1088, 1568, 1604, 1666, 1904, 2807, 3136, 3208, 3332, 3808, 5614, 6416, 6664, 6817, 7616, 11228, 12832, 13328, 13634, 19649, 22456, 25664, 26656, 27268, 39298, 44912, 47719, 53312, 54536, 78596, 89824, 95438, 109072, 157192, 179648, 190876, 218144, 314384, 334033, 381752, 436288, 628768, 668066, 763504, 1257536, 1336132, 1527008, 2672264, 3054016, 5344528, 10689056, 21378112]

約数ペア:

[(1, 21378112), (2, 10689056), (4, 5344528), (7, 3054016), (8, 2672264), (14, 1527008), (16, 1336132), (17, 1257536), (28, 763504), (32, 668066), (34, 628768), (49, 436288), (56, 381752), (64, 334033), (68, 314384), (98, 218144), (112, 190876), (119, 179648), (136, 157192), (196, 109072), (224, 95438), (238, 89824), (272, 78596), (392, 54536), (401, 53312), (448, 47719), (476, 44912), (544, 39298), (784, 27268), (802, 26656), (833, 25664), (952, 22456), (1088, 19649), (1568, 13634), (1604, 13328), (1666, 12832), (1904, 11228), (2807, 7616), (3136, 6817), (3208, 6664), (3332, 6416), (3808, 5614)]