19665328

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{367}}^1$

素因数の和:589

約数の個数: 40

約数和(自身を含む): 40658112

約数和(自身を除く): 20992784

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 197, 272, 367, 394, 734, 788, 1468, 1576, 2936, 3152, 3349, 5872, 6239, 6698, 12478, 13396, 24956, 26792, 49912, 53584, 72299, 99824, 144598, 289196, 578392, 1156784, 1229083, 2458166, 4916332, 9832664, 19665328]

約数ペア:

[(1, 19665328), (2, 9832664), (4, 4916332), (8, 2458166), (16, 1229083), (17, 1156784), (34, 578392), (68, 289196), (136, 144598), (197, 99824), (272, 72299), (367, 53584), (394, 49912), (734, 26792), (788, 24956), (1468, 13396), (1576, 12478), (2936, 6698), (3152, 6239), (3349, 5872)]