21270410

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{523}}^1$

素因数の和:627

約数の個数: 48

約数和(自身を含む): 45160416

約数和(自身を除く): 23890006

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 83, 98, 166, 245, 415, 490, 523, 581, 830, 1046, 1162, 2615, 2905, 3661, 4067, 5230, 5810, 7322, 8134, 18305, 20335, 25627, 36610, 40670, 43409, 51254, 86818, 128135, 217045, 256270, 303863, 434090, 607726, 1519315, 2127041, 3038630, 4254082, 10635205, 21270410]

約数ペア:

[(1, 21270410), (2, 10635205), (5, 4254082), (7, 3038630), (10, 2127041), (14, 1519315), (35, 607726), (49, 434090), (70, 303863), (83, 256270), (98, 217045), (166, 128135), (245, 86818), (415, 51254), (490, 43409), (523, 40670), (581, 36610), (830, 25627), (1046, 20335), (1162, 18305), (2615, 8134), (2905, 7322), (3661, 5810), (4067, 5230)]