21821696

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 48074880

約数和(自身を除く): 26253184

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 79, 83, 104, 128, 158, 166, 208, 256, 316, 332, 416, 632, 664, 832, 1027, 1079, 1264, 1328, 1664, 2054, 2158, 2528, 2656, 3328, 4108, 4316, 5056, 5312, 6557, 8216, 8632, 10112, 10624, 13114, 16432, 17264, 20224, 21248, 26228, 32864, 34528, 52456, 65728, 69056, 85241, 104912, 131456, 138112, 170482, 209824, 262912, 276224, 340964, 419648, 681928, 839296, 1363856, 1678592, 2727712, 5455424, 10910848, 21821696]

約数ペア:

[(1, 21821696), (2, 10910848), (4, 5455424), (8, 2727712), (13, 1678592), (16, 1363856), (26, 839296), (32, 681928), (52, 419648), (64, 340964), (79, 276224), (83, 262912), (104, 209824), (128, 170482), (158, 138112), (166, 131456), (208, 104912), (256, 85241), (316, 69056), (332, 65728), (416, 52456), (632, 34528), (664, 32864), (832, 26228), (1027, 21248), (1079, 20224), (1264, 17264), (1328, 16432), (1664, 13114), (2054, 10624), (2158, 10112), (2528, 8632), (2656, 8216), (3328, 6557), (4108, 5312), (4316, 5056)]