20197228

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:310

約数の個数: 36

約数和(自身を含む): 38020752

約数和(自身を除く): 17823524

約数列:

[1, 2, 4, 19, 38, 71, 76, 142, 197, 284, 361, 394, 722, 788, 1349, 1444, 2698, 3743, 5396, 7486, 13987, 14972, 25631, 27974, 51262, 55948, 71117, 102524, 142234, 265753, 284468, 531506, 1063012, 5049307, 10098614, 20197228]

約数ペア:

[(1, 20197228), (2, 10098614), (4, 5049307), (19, 1063012), (38, 531506), (71, 284468), (76, 265753), (142, 142234), (197, 102524), (284, 71117), (361, 55948), (394, 51262), (722, 27974), (788, 25631), (1349, 14972), (1444, 13987), (2698, 7486), (3743, 5396)]