20780545816

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{64499}}^1$

素因数の和:64648

約数の個数: 64

約数和(自身を含む): 43467840000

約数和(自身を除く): 22687294184

約数列:

[1, 2, 4, 8, 17, 23, 34, 46, 68, 92, 103, 136, 184, 206, 391, 412, 782, 824, 1564, 1751, 2369, 3128, 3502, 4738, 7004, 9476, 14008, 18952, 40273, 64499, 80546, 128998, 161092, 257996, 322184, 515992, 1096483, 1483477, 2192966, 2966954, 4385932, 5933908, 6643397, 8771864, 11867816, 13286794, 25219109, 26573588, 50438218, 53147176, 100876436, 112937749, 152798131, 201752872, 225875498, 305596262, 451750996, 611192524, 903501992, 1222385048, 2597568227, 5195136454, 10390272908, 20780545816]

約数ペア:

[(1, 20780545816), (2, 10390272908), (4, 5195136454), (8, 2597568227), (17, 1222385048), (23, 903501992), (34, 611192524), (46, 451750996), (68, 305596262), (92, 225875498), (103, 201752872), (136, 152798131), (184, 112937749), (206, 100876436), (391, 53147176), (412, 50438218), (782, 26573588), (824, 25219109), (1564, 13286794), (1751, 11867816), (2369, 8771864), (3128, 6643397), (3502, 5933908), (4738, 4385932), (7004, 2966954), (9476, 2192966), (14008, 1483477), (18952, 1096483), (40273, 515992), (64499, 322184), (80546, 257996), (128998, 161092)]