20919724736

素因数分解:

$2^6\times {\mathrm{19}}^2\times {\mathrm{419}}^1\times {\mathrm{2161}}^1$

素因数の和:2630

約数の個数: 84

約数和(自身を含む): 43937331480

約数和(自身を除く): 23017606744

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 152, 304, 361, 419, 608, 722, 838, 1216, 1444, 1676, 2161, 2888, 3352, 4322, 5776, 6704, 7961, 8644, 11552, 13408, 15922, 17288, 23104, 26816, 31844, 34576, 41059, 63688, 69152, 82118, 127376, 138304, 151259, 164236, 254752, 302518, 328472, 509504, 605036, 656944, 780121, 905459, 1210072, 1313888, 1560242, 1810918, 2420144, 2627776, 3120484, 3621836, 4840288, 6240968, 7243672, 9680576, 12481936, 14487344, 17203721, 24963872, 28974688, 34407442, 49927744, 57949376, 68814884, 137629768, 275259536, 326870699, 550519072, 653741398, 1101038144, 1307482796, 2614965592, 5229931184, 10459862368, 20919724736]

約数ペア:

[(1, 20919724736), (2, 10459862368), (4, 5229931184), (8, 2614965592), (16, 1307482796), (19, 1101038144), (32, 653741398), (38, 550519072), (64, 326870699), (76, 275259536), (152, 137629768), (304, 68814884), (361, 57949376), (419, 49927744), (608, 34407442), (722, 28974688), (838, 24963872), (1216, 17203721), (1444, 14487344), (1676, 12481936), (2161, 9680576), (2888, 7243672), (3352, 6240968), (4322, 4840288), (5776, 3621836), (6704, 3120484), (7961, 2627776), (8644, 2420144), (11552, 1810918), (13408, 1560242), (15922, 1313888), (17288, 1210072), (23104, 905459), (26816, 780121), (31844, 656944), (34576, 605036), (41059, 509504), (63688, 328472), (69152, 302518), (82118, 254752), (127376, 164236), (138304, 151259)]