21272416

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{271}}^1$

素因数の和:515

約数の個数: 48

約数和(自身を含む): 46061568

約数和(自身を除く): 24789152

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 176, 223, 271, 352, 446, 542, 892, 1084, 1784, 2168, 2453, 2981, 3568, 4336, 4906, 5962, 7136, 8672, 9812, 11924, 19624, 23848, 39248, 47696, 60433, 78496, 95392, 120866, 241732, 483464, 664763, 966928, 1329526, 1933856, 2659052, 5318104, 10636208, 21272416]

約数ペア:

[(1, 21272416), (2, 10636208), (4, 5318104), (8, 2659052), (11, 1933856), (16, 1329526), (22, 966928), (32, 664763), (44, 483464), (88, 241732), (176, 120866), (223, 95392), (271, 78496), (352, 60433), (446, 47696), (542, 39248), (892, 23848), (1084, 19624), (1784, 11924), (2168, 9812), (2453, 8672), (2981, 7136), (3568, 5962), (4336, 4906)]