85571780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{19717}}^1$

素因数の和:19764

約数の個数: 48

約数和(自身を含む): 212007936

約数和(自身を除く): 126436156

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 19717, 39434, 78868, 98585, 138019, 197170, 276038, 394340, 552076, 611227, 690095, 1222454, 1380190, 2444908, 2760380, 3056135, 4278589, 6112270, 8557178, 12224540, 17114356, 21392945, 42785890, 85571780]

約数ペア:

[(1, 85571780), (2, 42785890), (4, 21392945), (5, 17114356), (7, 12224540), (10, 8557178), (14, 6112270), (20, 4278589), (28, 3056135), (31, 2760380), (35, 2444908), (62, 1380190), (70, 1222454), (124, 690095), (140, 611227), (155, 552076), (217, 394340), (310, 276038), (434, 197170), (620, 138019), (868, 98585), (1085, 78868), (2170, 39434), (4340, 19717)]