208913960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1\times {\mathrm{509}}^1$

素因数の和:882

約数の個数: 64

約数和(自身を含む): 487641600

約数和(自身を除く): 278727640

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 331, 509, 620, 662, 1018, 1240, 1324, 1655, 2036, 2545, 2648, 3310, 4072, 5090, 6620, 10180, 10261, 13240, 15779, 20360, 20522, 31558, 41044, 51305, 63116, 78895, 82088, 102610, 126232, 157790, 168479, 205220, 315580, 336958, 410440, 631160, 673916, 842395, 1347832, 1684790, 3369580, 5222849, 6739160, 10445698, 20891396, 26114245, 41782792, 52228490, 104456980, 208913960]

約数ペア:

[(1, 208913960), (2, 104456980), (4, 52228490), (5, 41782792), (8, 26114245), (10, 20891396), (20, 10445698), (31, 6739160), (40, 5222849), (62, 3369580), (124, 1684790), (155, 1347832), (248, 842395), (310, 673916), (331, 631160), (509, 410440), (620, 336958), (662, 315580), (1018, 205220), (1240, 168479), (1324, 157790), (1655, 126232), (2036, 102610), (2545, 82088), (2648, 78895), (3310, 63116), (4072, 51305), (5090, 41044), (6620, 31558), (10180, 20522), (10261, 20360), (13240, 15779)]