21005308

素因数分解:

$2^2\times {\mathrm{83}}^1\times {\mathrm{151}}^1\times {\mathrm{419}}^1$

素因数の和:657

約数の個数: 24

約数和(自身を含む): 37537920

約数和(自身を除く): 16532612

約数列:

[1, 2, 4, 83, 151, 166, 302, 332, 419, 604, 838, 1676, 12533, 25066, 34777, 50132, 63269, 69554, 126538, 139108, 253076, 5251327, 10502654, 21005308]

約数ペア:

[(1, 21005308), (2, 10502654), (4, 5251327), (83, 253076), (151, 139108), (166, 126538), (302, 69554), (332, 63269), (419, 50132), (604, 34777), (838, 25066), (1676, 12533)]