21139552

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4967}}^1$

素因数の和:5003

約数の個数: 48

約数和(自身を含む): 50077440

約数和(自身を除く): 28937888

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 76, 112, 133, 152, 224, 266, 304, 532, 608, 1064, 2128, 4256, 4967, 9934, 19868, 34769, 39736, 69538, 79472, 94373, 139076, 158944, 188746, 278152, 377492, 556304, 660611, 754984, 1112608, 1321222, 1509968, 2642444, 3019936, 5284888, 10569776, 21139552]

約数ペア:

[(1, 21139552), (2, 10569776), (4, 5284888), (7, 3019936), (8, 2642444), (14, 1509968), (16, 1321222), (19, 1112608), (28, 754984), (32, 660611), (38, 556304), (56, 377492), (76, 278152), (112, 188746), (133, 158944), (152, 139076), (224, 94373), (266, 79472), (304, 69538), (532, 39736), (608, 34769), (1064, 19868), (2128, 9934), (4256, 4967)]