19780316

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{71}}^1\times {\mathrm{241}}^1$

素因数の和:350

約数の個数: 36

約数和(自身を含む): 37444176

約数和(自身を除く): 17663860

約数列:

[1, 2, 4, 17, 34, 68, 71, 142, 241, 284, 289, 482, 578, 964, 1156, 1207, 2414, 4097, 4828, 8194, 16388, 17111, 20519, 34222, 41038, 68444, 69649, 82076, 139298, 278596, 290887, 581774, 1163548, 4945079, 9890158, 19780316]

約数ペア:

[(1, 19780316), (2, 9890158), (4, 4945079), (17, 1163548), (34, 581774), (68, 290887), (71, 278596), (142, 139298), (241, 82076), (284, 69649), (289, 68444), (482, 41038), (578, 34222), (964, 20519), (1156, 17111), (1207, 16388), (2414, 8194), (4097, 4828)]