21681758

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{397}}^1$

素因数の和:536

約数の個数: 32

約数和(自身を含む): 38513664

約数和(自身を除く): 16831906

約数列:

[1, 2, 7, 14, 47, 83, 94, 166, 329, 397, 581, 658, 794, 1162, 2779, 3901, 5558, 7802, 18659, 27307, 32951, 37318, 54614, 65902, 130613, 230657, 261226, 461314, 1548697, 3097394, 10840879, 21681758]

約数ペア:

[(1, 21681758), (2, 10840879), (7, 3097394), (14, 1548697), (47, 461314), (83, 261226), (94, 230657), (166, 130613), (329, 65902), (397, 54614), (581, 37318), (658, 32951), (794, 27307), (1162, 18659), (2779, 7802), (3901, 5558)]