20122517840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{643303}}^1$

素因数の和:643356

約数の個数: 80

約数和(自身を含む): 51690763008

約数和(自身を除く): 31568245168

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 34, 40, 46, 68, 80, 85, 92, 115, 136, 170, 184, 230, 272, 340, 368, 391, 460, 680, 782, 920, 1360, 1564, 1840, 1955, 3128, 3910, 6256, 7820, 15640, 31280, 643303, 1286606, 2573212, 3216515, 5146424, 6433030, 10292848, 10936151, 12866060, 14795969, 21872302, 25732120, 29591938, 43744604, 51464240, 54680755, 59183876, 73979845, 87489208, 109361510, 118367752, 147959690, 174978416, 218723020, 236735504, 251531473, 295919380, 437446040, 503062946, 591838760, 874892080, 1006125892, 1183677520, 1257657365, 2012251784, 2515314730, 4024503568, 5030629460, 10061258920, 20122517840]

約数ペア:

[(1, 20122517840), (2, 10061258920), (4, 5030629460), (5, 4024503568), (8, 2515314730), (10, 2012251784), (16, 1257657365), (17, 1183677520), (20, 1006125892), (23, 874892080), (34, 591838760), (40, 503062946), (46, 437446040), (68, 295919380), (80, 251531473), (85, 236735504), (92, 218723020), (115, 174978416), (136, 147959690), (170, 118367752), (184, 109361510), (230, 87489208), (272, 73979845), (340, 59183876), (368, 54680755), (391, 51464240), (460, 43744604), (680, 29591938), (782, 25732120), (920, 21872302), (1360, 14795969), (1564, 12866060), (1840, 10936151), (1955, 10292848), (3128, 6433030), (3910, 5146424), (6256, 3216515), (7820, 2573212), (15640, 1286606), (31280, 643303)]