21987294

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{467}}^1$

素因数の和:557

約数の個数: 64

約数和(自身を含む): 53913600

約数和(自身を除く): 31926306

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 59, 114, 118, 133, 177, 266, 354, 399, 413, 467, 798, 826, 934, 1121, 1239, 1401, 2242, 2478, 2802, 3269, 3363, 6538, 6726, 7847, 8873, 9807, 15694, 17746, 19614, 23541, 26619, 27553, 47082, 53238, 55106, 62111, 82659, 124222, 165318, 186333, 192871, 372666, 385742, 523507, 578613, 1047014, 1157226, 1570521, 3141042, 3664549, 7329098, 10993647, 21987294]

約数ペア:

[(1, 21987294), (2, 10993647), (3, 7329098), (6, 3664549), (7, 3141042), (14, 1570521), (19, 1157226), (21, 1047014), (38, 578613), (42, 523507), (57, 385742), (59, 372666), (114, 192871), (118, 186333), (133, 165318), (177, 124222), (266, 82659), (354, 62111), (399, 55106), (413, 53238), (467, 47082), (798, 27553), (826, 26619), (934, 23541), (1121, 19614), (1239, 17746), (1401, 15694), (2242, 9807), (2478, 8873), (2802, 7847), (3269, 6726), (3363, 6538)]