21951680

素因数分解:

$2^6\times 5^1\times {\mathrm{181}}^1\times {\mathrm{379}}^1$

素因数の和:577

約数の個数: 56

約数和(自身を含む): 52699920

約数和(自身を除く): 30748240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 181, 320, 362, 379, 724, 758, 905, 1448, 1516, 1810, 1895, 2896, 3032, 3620, 3790, 5792, 6064, 7240, 7580, 11584, 12128, 14480, 15160, 24256, 28960, 30320, 57920, 60640, 68599, 121280, 137198, 274396, 342995, 548792, 685990, 1097584, 1371980, 2195168, 2743960, 4390336, 5487920, 10975840, 21951680]

約数ペア:

[(1, 21951680), (2, 10975840), (4, 5487920), (5, 4390336), (8, 2743960), (10, 2195168), (16, 1371980), (20, 1097584), (32, 685990), (40, 548792), (64, 342995), (80, 274396), (160, 137198), (181, 121280), (320, 68599), (362, 60640), (379, 57920), (724, 30320), (758, 28960), (905, 24256), (1448, 15160), (1516, 14480), (1810, 12128), (1895, 11584), (2896, 7580), (3032, 7240), (3620, 6064), (3790, 5792)]