21292768

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{5003}}^1$

素因数の和:5039

約数の個数: 48

約数和(自身を含む): 50440320

約数和(自身を除く): 29147552

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, 5003, 10006, 20012, 35021, 40024, 70042, 80048, 95057, 140084, 160096, 190114, 280168, 380228, 560336, 665399, 760456, 1120672, 1330798, 1520912, 2661596, 3041824, 5323192, 10646384, 21292768]

約数ペア:

[(1, 21292768), (2, 10646384), (4, 5323192), (7, 3041824), (8, 2661596), (14, 1520912), (16, 1330798), (19, 1120672), (28, 760456), (32, 665399), (38, 560336), (56, 380228), (76, 280168), (112, 190114), (133, 160096), (152, 140084), (224, 95057), (266, 80048), (304, 70042), (532, 40024), (608, 35021), (1064, 20012), (2128, 10006), (4256, 5003)]