19988610

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{491}}^1$

素因数の和:583

約数の個数: 64

約数和(自身を含む): 51010560

約数和(自身を除く): 31021950

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 59, 69, 115, 118, 138, 177, 230, 295, 345, 354, 491, 590, 690, 885, 982, 1357, 1473, 1770, 2455, 2714, 2946, 4071, 4910, 6785, 7365, 8142, 11293, 13570, 14730, 20355, 22586, 28969, 33879, 40710, 56465, 57938, 67758, 86907, 112930, 144845, 169395, 173814, 289690, 338790, 434535, 666287, 869070, 1332574, 1998861, 3331435, 3997722, 6662870, 9994305, 19988610]

約数ペア:

[(1, 19988610), (2, 9994305), (3, 6662870), (5, 3997722), (6, 3331435), (10, 1998861), (15, 1332574), (23, 869070), (30, 666287), (46, 434535), (59, 338790), (69, 289690), (115, 173814), (118, 169395), (138, 144845), (177, 112930), (230, 86907), (295, 67758), (345, 57938), (354, 56465), (491, 40710), (590, 33879), (690, 28969), (885, 22586), (982, 20355), (1357, 14730), (1473, 13570), (1770, 11293), (2455, 8142), (2714, 7365), (2946, 6785), (4071, 4910)]