18389648

素因数分解:

$2^4\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{97}}^1$

素因数の和:180

約数の個数: 60

約数和(自身を含む): 39171972

約数和(自身を除く): 20782324

約数列:

[1, 2, 4, 8, 16, 17, 34, 41, 68, 82, 97, 136, 164, 194, 272, 289, 328, 388, 578, 656, 697, 776, 1156, 1394, 1552, 1649, 2312, 2788, 3298, 3977, 4624, 5576, 6596, 7954, 11152, 11849, 13192, 15908, 23698, 26384, 28033, 31816, 47396, 56066, 63632, 67609, 94792, 112132, 135218, 189584, 224264, 270436, 448528, 540872, 1081744, 1149353, 2298706, 4597412, 9194824, 18389648]

約数ペア:

[(1, 18389648), (2, 9194824), (4, 4597412), (8, 2298706), (16, 1149353), (17, 1081744), (34, 540872), (41, 448528), (68, 270436), (82, 224264), (97, 189584), (136, 135218), (164, 112132), (194, 94792), (272, 67609), (289, 63632), (328, 56066), (388, 47396), (578, 31816), (656, 28033), (697, 26384), (776, 23698), (1156, 15908), (1394, 13192), (1552, 11849), (1649, 11152), (2312, 7954), (2788, 6596), (3298, 5576), (3977, 4624)]