21507136

素因数分解:

$2^6\times 7^1\times {\mathrm{61}}^1\times {\mathrm{787}}^1$

素因数の和:867

約数の個数: 56

約数和(自身を含む): 49637696

約数和(自身を除く): 28130560

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 61, 64, 112, 122, 224, 244, 427, 448, 488, 787, 854, 976, 1574, 1708, 1952, 3148, 3416, 3904, 5509, 6296, 6832, 11018, 12592, 13664, 22036, 25184, 27328, 44072, 48007, 50368, 88144, 96014, 176288, 192028, 336049, 352576, 384056, 672098, 768112, 1344196, 1536224, 2688392, 3072448, 5376784, 10753568, 21507136]

約数ペア:

[(1, 21507136), (2, 10753568), (4, 5376784), (7, 3072448), (8, 2688392), (14, 1536224), (16, 1344196), (28, 768112), (32, 672098), (56, 384056), (61, 352576), (64, 336049), (112, 192028), (122, 176288), (224, 96014), (244, 88144), (427, 50368), (448, 48007), (488, 44072), (787, 27328), (854, 25184), (976, 22036), (1574, 13664), (1708, 12592), (1952, 11018), (3148, 6832), (3416, 6296), (3904, 5509)]