21240146

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:314

約数の個数: 32

約数和(自身を含む): 34670592

約数和(自身を除く): 13430446

約数列:

[1, 2, 31, 37, 47, 62, 74, 94, 197, 394, 1147, 1457, 1739, 2294, 2914, 3478, 6107, 7289, 9259, 12214, 14578, 18518, 53909, 107818, 225959, 287029, 342583, 451918, 574058, 685166, 10620073, 21240146]

約数ペア:

[(1, 21240146), (2, 10620073), (31, 685166), (37, 574058), (47, 451918), (62, 342583), (74, 287029), (94, 225959), (197, 107818), (394, 53909), (1147, 18518), (1457, 14578), (1739, 12214), (2294, 9259), (2914, 7289), (3478, 6107)]