21556640

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1013}}^1$

素因数の和:1054

約数の個数: 96

約数和(自身を含む): 61326720

約数和(自身を除く): 39770080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 160, 190, 224, 266, 280, 304, 380, 532, 560, 608, 665, 760, 1013, 1064, 1120, 1330, 1520, 2026, 2128, 2660, 3040, 4052, 4256, 5065, 5320, 7091, 8104, 10130, 10640, 14182, 16208, 19247, 20260, 21280, 28364, 32416, 35455, 38494, 40520, 56728, 70910, 76988, 81040, 96235, 113456, 134729, 141820, 153976, 162080, 192470, 226912, 269458, 283640, 307952, 384940, 538916, 567280, 615904, 673645, 769880, 1077832, 1134560, 1347290, 1539760, 2155664, 2694580, 3079520, 4311328, 5389160, 10778320, 21556640]

約数ペア:

[(1, 21556640), (2, 10778320), (4, 5389160), (5, 4311328), (7, 3079520), (8, 2694580), (10, 2155664), (14, 1539760), (16, 1347290), (19, 1134560), (20, 1077832), (28, 769880), (32, 673645), (35, 615904), (38, 567280), (40, 538916), (56, 384940), (70, 307952), (76, 283640), (80, 269458), (95, 226912), (112, 192470), (133, 162080), (140, 153976), (152, 141820), (160, 134729), (190, 113456), (224, 96235), (266, 81040), (280, 76988), (304, 70910), (380, 56728), (532, 40520), (560, 38494), (608, 35455), (665, 32416), (760, 28364), (1013, 21280), (1064, 20260), (1120, 19247), (1330, 16208), (1520, 14182), (2026, 10640), (2128, 10130), (2660, 8104), (3040, 7091), (4052, 5320), (4256, 5065)]