81180540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3391}}^1$

素因数の和:3432

約数の個数: 144

約数和(自身を含む): 296325120

約数和(自身を除く): 215144580

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 35, 36, 38, 42, 45, 57, 60, 63, 70, 76, 84, 90, 95, 105, 114, 126, 133, 140, 171, 180, 190, 210, 228, 252, 266, 285, 315, 342, 380, 399, 420, 532, 570, 630, 665, 684, 798, 855, 1140, 1197, 1260, 1330, 1596, 1710, 1995, 2394, 2660, 3391, 3420, 3990, 4788, 5985, 6782, 7980, 10173, 11970, 13564, 16955, 20346, 23737, 23940, 30519, 33910, 40692, 47474, 50865, 61038, 64429, 67820, 71211, 94948, 101730, 118685, 122076, 128858, 142422, 152595, 193287, 203460, 213633, 237370, 257716, 284844, 305190, 322145, 356055, 386574, 427266, 451003, 474740, 579861, 610380, 644290, 712110, 773148, 854532, 902006, 966435, 1068165, 1159722, 1288580, 1353009, 1424220, 1804012, 1932870, 2136330, 2255015, 2319444, 2706018, 2899305, 3865740, 4059027, 4272660, 4510030, 5412036, 5798610, 6765045, 8118054, 9020060, 11597220, 13530090, 16236108, 20295135, 27060180, 40590270, 81180540]

約数ペア:

[(1, 81180540), (2, 40590270), (3, 27060180), (4, 20295135), (5, 16236108), (6, 13530090), (7, 11597220), (9, 9020060), (10, 8118054), (12, 6765045), (14, 5798610), (15, 5412036), (18, 4510030), (19, 4272660), (20, 4059027), (21, 3865740), (28, 2899305), (30, 2706018), (35, 2319444), (36, 2255015), (38, 2136330), (42, 1932870), (45, 1804012), (57, 1424220), (60, 1353009), (63, 1288580), (70, 1159722), (76, 1068165), (84, 966435), (90, 902006), (95, 854532), (105, 773148), (114, 712110), (126, 644290), (133, 610380), (140, 579861), (171, 474740), (180, 451003), (190, 427266), (210, 386574), (228, 356055), (252, 322145), (266, 305190), (285, 284844), (315, 257716), (342, 237370), (380, 213633), (399, 203460), (420, 193287), (532, 152595), (570, 142422), (630, 128858), (665, 122076), (684, 118685), (798, 101730), (855, 94948), (1140, 71211), (1197, 67820), (1260, 64429), (1330, 61038), (1596, 50865), (1710, 47474), (1995, 40692), (2394, 33910), (2660, 30519), (3391, 23940), (3420, 23737), (3990, 20346), (4788, 16955), (5985, 13564), (6782, 11970), (7980, 10173)]