18917342780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{3863}}^1$

素因数の和:4168

約数の個数: 144

約数和(自身を含む): 48842196480

約数和(自身を除く): 29924853700

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 263, 266, 380, 490, 526, 532, 665, 931, 980, 1052, 1315, 1330, 1841, 1862, 2630, 2660, 3682, 3724, 3863, 4655, 4997, 5260, 7364, 7726, 9205, 9310, 9994, 12887, 15452, 18410, 18620, 19315, 19988, 24985, 25774, 27041, 34979, 36820, 38630, 49970, 51548, 54082, 64435, 69958, 73397, 77260, 99940, 108164, 128870, 135205, 139916, 146794, 174895, 189287, 244853, 257740, 270410, 293588, 349790, 366985, 378574, 489706, 513779, 540820, 699580, 733970, 757148, 946435, 979412, 1015969, 1027558, 1224265, 1467940, 1892870, 2031938, 2055116, 2448530, 2568895, 3596453, 3785740, 4063876, 4897060, 5079845, 5137790, 7111783, 7192906, 10159690, 10275580, 14223566, 14385812, 17982265, 19303411, 20319380, 28447132, 35558915, 35964530, 38606822, 49782481, 71117830, 71929060, 77213644, 96517055, 99564962, 135123877, 142235660, 193034110, 199129924, 248912405, 270247754, 386068220, 497824810, 540495508, 675619385, 945867139, 995649620, 1351238770, 1891734278, 2702477540, 3783468556, 4729335695, 9458671390, 18917342780]

約数ペア:

[(1, 18917342780), (2, 9458671390), (4, 4729335695), (5, 3783468556), (7, 2702477540), (10, 1891734278), (14, 1351238770), (19, 995649620), (20, 945867139), (28, 675619385), (35, 540495508), (38, 497824810), (49, 386068220), (70, 270247754), (76, 248912405), (95, 199129924), (98, 193034110), (133, 142235660), (140, 135123877), (190, 99564962), (196, 96517055), (245, 77213644), (263, 71929060), (266, 71117830), (380, 49782481), (490, 38606822), (526, 35964530), (532, 35558915), (665, 28447132), (931, 20319380), (980, 19303411), (1052, 17982265), (1315, 14385812), (1330, 14223566), (1841, 10275580), (1862, 10159690), (2630, 7192906), (2660, 7111783), (3682, 5137790), (3724, 5079845), (3863, 4897060), (4655, 4063876), (4997, 3785740), (5260, 3596453), (7364, 2568895), (7726, 2448530), (9205, 2055116), (9310, 2031938), (9994, 1892870), (12887, 1467940), (15452, 1224265), (18410, 1027558), (18620, 1015969), (19315, 979412), (19988, 946435), (24985, 757148), (25774, 733970), (27041, 699580), (34979, 540820), (36820, 513779), (38630, 489706), (49970, 378574), (51548, 366985), (54082, 349790), (64435, 293588), (69958, 270410), (73397, 257740), (77260, 244853), (99940, 189287), (108164, 174895), (128870, 146794), (135205, 139916)]