21170457

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{599}}^1$

素因数の和:643

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 20301543

約数列:

[1, 3, 7, 9, 11, 17, 21, 27, 33, 51, 63, 77, 99, 119, 153, 187, 189, 231, 297, 357, 459, 561, 599, 693, 1071, 1309, 1683, 1797, 2079, 3213, 3927, 4193, 5049, 5391, 6589, 10183, 11781, 12579, 16173, 19767, 30549, 35343, 37737, 46123, 59301, 71281, 91647, 112013, 113211, 138369, 177903, 213843, 274941, 336039, 415107, 641529, 784091, 1008117, 1245321, 1924587, 2352273, 3024351, 7056819, 21170457]

約数ペア:

[(1, 21170457), (3, 7056819), (7, 3024351), (9, 2352273), (11, 1924587), (17, 1245321), (21, 1008117), (27, 784091), (33, 641529), (51, 415107), (63, 336039), (77, 274941), (99, 213843), (119, 177903), (153, 138369), (187, 113211), (189, 112013), (231, 91647), (297, 71281), (357, 59301), (459, 46123), (561, 37737), (599, 35343), (693, 30549), (1071, 19767), (1309, 16173), (1683, 12579), (1797, 11781), (2079, 10183), (3213, 6589), (3927, 5391), (4193, 5049)]