18778064

素因数分解:

$2^4\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:204

約数の個数: 60

約数和(自身を含む): 40199808

約数和(自身を除く): 21421744

約数列:

[1, 2, 4, 8, 16, 17, 31, 34, 62, 68, 124, 131, 136, 248, 262, 272, 289, 496, 524, 527, 578, 1048, 1054, 1156, 2096, 2108, 2227, 2312, 4061, 4216, 4454, 4624, 8122, 8432, 8908, 8959, 16244, 17816, 17918, 32488, 35632, 35836, 37859, 64976, 69037, 71672, 75718, 138074, 143344, 151436, 276148, 302872, 552296, 605744, 1104592, 1173629, 2347258, 4694516, 9389032, 18778064]

約数ペア:

[(1, 18778064), (2, 9389032), (4, 4694516), (8, 2347258), (16, 1173629), (17, 1104592), (31, 605744), (34, 552296), (62, 302872), (68, 276148), (124, 151436), (131, 143344), (136, 138074), (248, 75718), (262, 71672), (272, 69037), (289, 64976), (496, 37859), (524, 35836), (527, 35632), (578, 32488), (1048, 17918), (1054, 17816), (1156, 16244), (2096, 8959), (2108, 8908), (2227, 8432), (2312, 8122), (4061, 4624), (4216, 4454)]