81242940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{1409}}^1$

素因数の和:1483

約数の個数: 72

約数和(自身を含む): 235221840

約数和(自身を除く): 153978900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 186, 310, 372, 465, 620, 930, 961, 1409, 1860, 1922, 2818, 2883, 3844, 4227, 4805, 5636, 5766, 7045, 8454, 9610, 11532, 14090, 14415, 16908, 19220, 21135, 28180, 28830, 42270, 43679, 57660, 84540, 87358, 131037, 174716, 218395, 262074, 436790, 524148, 655185, 873580, 1310370, 1354049, 2620740, 2708098, 4062147, 5416196, 6770245, 8124294, 13540490, 16248588, 20310735, 27080980, 40621470, 81242940]

約数ペア:

[(1, 81242940), (2, 40621470), (3, 27080980), (4, 20310735), (5, 16248588), (6, 13540490), (10, 8124294), (12, 6770245), (15, 5416196), (20, 4062147), (30, 2708098), (31, 2620740), (60, 1354049), (62, 1310370), (93, 873580), (124, 655185), (155, 524148), (186, 436790), (310, 262074), (372, 218395), (465, 174716), (620, 131037), (930, 87358), (961, 84540), (1409, 57660), (1860, 43679), (1922, 42270), (2818, 28830), (2883, 28180), (3844, 21135), (4227, 19220), (4805, 16908), (5636, 14415), (5766, 14090), (7045, 11532), (8454, 9610)]