204860240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{701}}^1$

素因数の和:1008

約数の個数: 80

約数和(自身を含む): 515498256

約数和(自身を除く): 310638016

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 281, 520, 562, 701, 1040, 1124, 1402, 1405, 2248, 2804, 2810, 3505, 3653, 4496, 5608, 5620, 7010, 7306, 9113, 11216, 11240, 14020, 14612, 18226, 18265, 22480, 28040, 29224, 36452, 36530, 45565, 56080, 58448, 72904, 73060, 91130, 145808, 146120, 182260, 196981, 292240, 364520, 393962, 729040, 787924, 984905, 1575848, 1969810, 2560753, 3151696, 3939620, 5121506, 7879240, 10243012, 12803765, 15758480, 20486024, 25607530, 40972048, 51215060, 102430120, 204860240]

約数ペア:

[(1, 204860240), (2, 102430120), (4, 51215060), (5, 40972048), (8, 25607530), (10, 20486024), (13, 15758480), (16, 12803765), (20, 10243012), (26, 7879240), (40, 5121506), (52, 3939620), (65, 3151696), (80, 2560753), (104, 1969810), (130, 1575848), (208, 984905), (260, 787924), (281, 729040), (520, 393962), (562, 364520), (701, 292240), (1040, 196981), (1124, 182260), (1402, 146120), (1405, 145808), (2248, 91130), (2804, 73060), (2810, 72904), (3505, 58448), (3653, 56080), (4496, 45565), (5608, 36530), (5620, 36452), (7010, 29224), (7306, 28040), (9113, 22480), (11216, 18265), (11240, 18226), (14020, 14612)]