21291255872

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{247711}}^1$

素因数の和:247819

約数の個数: 56

約数和(自身を含む): 45301570560

約数和(自身を除く): 24010314688

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 79, 136, 158, 272, 316, 544, 632, 1088, 1264, 1343, 2528, 2686, 5056, 5372, 10744, 21488, 42976, 85952, 247711, 495422, 990844, 1981688, 3963376, 4211087, 7926752, 8422174, 15853504, 16844348, 19569169, 33688696, 39138338, 67377392, 78276676, 134754784, 156553352, 269509568, 313106704, 332675873, 626213408, 665351746, 1252426816, 1330703492, 2661406984, 5322813968, 10645627936, 21291255872]

約数ペア:

[(1, 21291255872), (2, 10645627936), (4, 5322813968), (8, 2661406984), (16, 1330703492), (17, 1252426816), (32, 665351746), (34, 626213408), (64, 332675873), (68, 313106704), (79, 269509568), (136, 156553352), (158, 134754784), (272, 78276676), (316, 67377392), (544, 39138338), (632, 33688696), (1088, 19569169), (1264, 16844348), (1343, 15853504), (2528, 8422174), (2686, 7926752), (5056, 4211087), (5372, 3963376), (10744, 1981688), (21488, 990844), (42976, 495422), (85952, 247711)]