19898109

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{563}}^1$

素因数の和:607

約数の個数: 64

約数和(自身を含む): 38983680

約数和(自身を除く): 19085571

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, 563, 693, 1071, 1309, 1683, 1689, 2079, 3213, 3927, 3941, 5049, 5067, 6193, 9571, 11781, 11823, 15201, 18579, 28713, 35343, 35469, 43351, 55737, 66997, 86139, 105281, 106407, 130053, 167211, 200991, 258417, 315843, 390159, 602973, 736967, 947529, 1170477, 1808919, 2210901, 2842587, 6632703, 19898109]

約数ペア:

[(1, 19898109), (3, 6632703), (7, 2842587), (9, 2210901), (11, 1808919), (17, 1170477), (21, 947529), (27, 736967), (33, 602973), (51, 390159), (63, 315843), (77, 258417), (99, 200991), (119, 167211), (153, 130053), (187, 106407), (189, 105281), (231, 86139), (297, 66997), (357, 55737), (459, 43351), (561, 35469), (563, 35343), (693, 28713), (1071, 18579), (1309, 15201), (1683, 11823), (1689, 11781), (2079, 9571), (3213, 6193), (3927, 5067), (3941, 5049)]