21546988

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{509}}^1\times {\mathrm{557}}^1$

素因数の和:1089

約数の個数: 24

約数和(自身を含む): 39841200

約数和(自身を除く): 18294212

約数列:

[1, 2, 4, 19, 38, 76, 509, 557, 1018, 1114, 2036, 2228, 9671, 10583, 19342, 21166, 38684, 42332, 283513, 567026, 1134052, 5386747, 10773494, 21546988]

約数ペア:

[(1, 21546988), (2, 10773494), (4, 5386747), (19, 1134052), (38, 567026), (76, 283513), (509, 42332), (557, 38684), (1018, 21166), (1114, 19342), (2036, 10583), (2228, 9671)]