20171178580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{313}}^1\times {\mathrm{479}}^1$

素因数の和:870

約数の個数: 144

約数和(自身を含む): 50287426560

約数和(自身を除く): 30116247980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 313, 434, 479, 620, 626, 868, 958, 961, 1085, 1252, 1565, 1916, 1922, 2170, 2191, 2395, 3130, 3353, 3844, 4340, 4382, 4790, 4805, 6260, 6706, 6727, 8764, 9580, 9610, 9703, 10955, 13412, 13454, 14849, 16765, 19220, 19406, 21910, 26908, 29698, 33530, 33635, 38812, 43820, 48515, 59396, 67060, 67270, 67921, 74245, 97030, 103943, 134540, 135842, 148490, 149927, 194060, 207886, 271684, 296980, 299854, 300793, 339605, 415772, 460319, 519715, 599708, 601586, 679210, 749635, 920638, 1039430, 1049489, 1203172, 1358420, 1499270, 1503965, 1841276, 2078860, 2098978, 2105551, 2301595, 2998540, 3007930, 3222233, 4197956, 4211102, 4603190, 4647737, 5247445, 6015860, 6444466, 8422204, 9206380, 9295474, 10494890, 10527755, 12888932, 16111165, 18590948, 20989780, 21055510, 23238685, 32222330, 32534159, 42111020, 46477370, 64444660, 65068318, 92954740, 130136636, 144079847, 162670795, 288159694, 325341590, 576319388, 650683180, 720399235, 1008558929, 1440798470, 2017117858, 2881596940, 4034235716, 5042794645, 10085589290, 20171178580]

約数ペア:

[(1, 20171178580), (2, 10085589290), (4, 5042794645), (5, 4034235716), (7, 2881596940), (10, 2017117858), (14, 1440798470), (20, 1008558929), (28, 720399235), (31, 650683180), (35, 576319388), (62, 325341590), (70, 288159694), (124, 162670795), (140, 144079847), (155, 130136636), (217, 92954740), (310, 65068318), (313, 64444660), (434, 46477370), (479, 42111020), (620, 32534159), (626, 32222330), (868, 23238685), (958, 21055510), (961, 20989780), (1085, 18590948), (1252, 16111165), (1565, 12888932), (1916, 10527755), (1922, 10494890), (2170, 9295474), (2191, 9206380), (2395, 8422204), (3130, 6444466), (3353, 6015860), (3844, 5247445), (4340, 4647737), (4382, 4603190), (4790, 4211102), (4805, 4197956), (6260, 3222233), (6706, 3007930), (6727, 2998540), (8764, 2301595), (9580, 2105551), (9610, 2098978), (9703, 2078860), (10955, 1841276), (13412, 1503965), (13454, 1499270), (14849, 1358420), (16765, 1203172), (19220, 1049489), (19406, 1039430), (21910, 920638), (26908, 749635), (29698, 679210), (33530, 601586), (33635, 599708), (38812, 519715), (43820, 460319), (48515, 415772), (59396, 339605), (67060, 300793), (67270, 299854), (67921, 296980), (74245, 271684), (97030, 207886), (103943, 194060), (134540, 149927), (135842, 148490)]