21908178

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1$

素因数の和:324

約数の個数: 64

約数和(自身を含む): 51955200

約数和(自身を除く): 30047022

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 114, 131, 163, 171, 262, 326, 342, 393, 489, 513, 786, 978, 1026, 1179, 1467, 2358, 2489, 2934, 3097, 3537, 4401, 4978, 6194, 7074, 7467, 8802, 9291, 14934, 18582, 21353, 22401, 27873, 42706, 44802, 55746, 64059, 67203, 83619, 128118, 134406, 167238, 192177, 384354, 405707, 576531, 811414, 1153062, 1217121, 2434242, 3651363, 7302726, 10954089, 21908178]

約数ペア:

[(1, 21908178), (2, 10954089), (3, 7302726), (6, 3651363), (9, 2434242), (18, 1217121), (19, 1153062), (27, 811414), (38, 576531), (54, 405707), (57, 384354), (114, 192177), (131, 167238), (163, 134406), (171, 128118), (262, 83619), (326, 67203), (342, 64059), (393, 55746), (489, 44802), (513, 42706), (786, 27873), (978, 22401), (1026, 21353), (1179, 18582), (1467, 14934), (2358, 9291), (2489, 8802), (2934, 7467), (3097, 7074), (3537, 6194), (4401, 4978)]