21490616

素因数分解:

$2^3\times 7^2\times {\mathrm{73}}^1\times {\mathrm{751}}^1$

素因数の和:844

約数の個数: 48

約数和(自身を含む): 47579040

約数和(自身を除く): 26088424

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 73, 98, 146, 196, 292, 392, 511, 584, 751, 1022, 1502, 2044, 3004, 3577, 4088, 5257, 6008, 7154, 10514, 14308, 21028, 28616, 36799, 42056, 54823, 73598, 109646, 147196, 219292, 294392, 383761, 438584, 767522, 1535044, 2686327, 3070088, 5372654, 10745308, 21490616]

約数ペア:

[(1, 21490616), (2, 10745308), (4, 5372654), (7, 3070088), (8, 2686327), (14, 1535044), (28, 767522), (49, 438584), (56, 383761), (73, 294392), (98, 219292), (146, 147196), (196, 109646), (292, 73598), (392, 54823), (511, 42056), (584, 36799), (751, 28616), (1022, 21028), (1502, 14308), (2044, 10514), (3004, 7154), (3577, 6008), (4088, 5257)]