18773872

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:218

約数の個数: 60

約数和(自身を含む): 40437144

約数和(自身を除く): 21663272

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 53, 104, 106, 131, 169, 208, 212, 262, 338, 424, 524, 676, 689, 848, 1048, 1352, 1378, 1703, 2096, 2704, 2756, 3406, 5512, 6812, 6943, 8957, 11024, 13624, 13886, 17914, 22139, 27248, 27772, 35828, 44278, 55544, 71656, 88556, 90259, 111088, 143312, 177112, 180518, 354224, 361036, 722072, 1173367, 1444144, 2346734, 4693468, 9386936, 18773872]

約数ペア:

[(1, 18773872), (2, 9386936), (4, 4693468), (8, 2346734), (13, 1444144), (16, 1173367), (26, 722072), (52, 361036), (53, 354224), (104, 180518), (106, 177112), (131, 143312), (169, 111088), (208, 90259), (212, 88556), (262, 71656), (338, 55544), (424, 44278), (524, 35828), (676, 27772), (689, 27248), (848, 22139), (1048, 17914), (1352, 13886), (1378, 13624), (1703, 11024), (2096, 8957), (2704, 6943), (2756, 6812), (3406, 5512)]