20159069980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{149837}}^1$

素因数の和:149915

約数の個数: 72

約数和(自身を含む): 49993149024

約数和(自身を除く): 29834079044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 961, 1085, 1922, 2170, 3844, 4340, 4805, 6727, 9610, 13454, 19220, 26908, 33635, 67270, 134540, 149837, 299674, 599348, 749185, 1048859, 1498370, 2097718, 2996740, 4195436, 4644947, 5244295, 9289894, 10488590, 18579788, 20977180, 23224735, 32514629, 46449470, 65029258, 92898940, 130058516, 143993357, 162573145, 287986714, 325146290, 575973428, 650292580, 719966785, 1007953499, 1439933570, 2015906998, 2879867140, 4031813996, 5039767495, 10079534990, 20159069980]

約数ペア:

[(1, 20159069980), (2, 10079534990), (4, 5039767495), (5, 4031813996), (7, 2879867140), (10, 2015906998), (14, 1439933570), (20, 1007953499), (28, 719966785), (31, 650292580), (35, 575973428), (62, 325146290), (70, 287986714), (124, 162573145), (140, 143993357), (155, 130058516), (217, 92898940), (310, 65029258), (434, 46449470), (620, 32514629), (868, 23224735), (961, 20977180), (1085, 18579788), (1922, 10488590), (2170, 9289894), (3844, 5244295), (4340, 4644947), (4805, 4195436), (6727, 2996740), (9610, 2097718), (13454, 1498370), (19220, 1048859), (26908, 749185), (33635, 599348), (67270, 299674), (134540, 149837)]