19848760

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1$

素因数の和:352

約数の個数: 64

約数和(自身を含む): 47044800

約数和(自身を除く): 27196040

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 71, 116, 142, 145, 232, 241, 284, 290, 355, 482, 568, 580, 710, 964, 1160, 1205, 1420, 1928, 2059, 2410, 2840, 4118, 4820, 6989, 8236, 9640, 10295, 13978, 16472, 17111, 20590, 27956, 34222, 34945, 41180, 55912, 68444, 69890, 82360, 85555, 136888, 139780, 171110, 279560, 342220, 496219, 684440, 992438, 1984876, 2481095, 3969752, 4962190, 9924380, 19848760]

約数ペア:

[(1, 19848760), (2, 9924380), (4, 4962190), (5, 3969752), (8, 2481095), (10, 1984876), (20, 992438), (29, 684440), (40, 496219), (58, 342220), (71, 279560), (116, 171110), (142, 139780), (145, 136888), (232, 85555), (241, 82360), (284, 69890), (290, 68444), (355, 55912), (482, 41180), (568, 34945), (580, 34222), (710, 27956), (964, 20590), (1160, 17111), (1205, 16472), (1420, 13978), (1928, 10295), (2059, 9640), (2410, 8236), (2840, 6989), (4118, 4820)]