256188660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6703}}^1$

素因数の和:6742

約数の個数: 144

約数和(自身を含む): 898765056

約数和(自身を除く): 642576396

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 49, 52, 60, 65, 70, 78, 84, 91, 98, 105, 130, 140, 147, 156, 182, 195, 196, 210, 245, 260, 273, 294, 364, 390, 420, 455, 490, 546, 588, 637, 735, 780, 910, 980, 1092, 1274, 1365, 1470, 1820, 1911, 2548, 2730, 2940, 3185, 3822, 5460, 6370, 6703, 7644, 9555, 12740, 13406, 19110, 20109, 26812, 33515, 38220, 40218, 46921, 67030, 80436, 87139, 93842, 100545, 134060, 140763, 174278, 187684, 201090, 234605, 261417, 281526, 328447, 348556, 402180, 435695, 469210, 522834, 563052, 609973, 656894, 703815, 871390, 938420, 985341, 1045668, 1219946, 1307085, 1313788, 1407630, 1642235, 1742780, 1829919, 1970682, 2439892, 2614170, 2815260, 3049865, 3284470, 3659838, 3941364, 4269811, 4926705, 5228340, 6099730, 6568940, 7319676, 8539622, 9149595, 9853410, 12199460, 12809433, 17079244, 18299190, 19706820, 21349055, 25618866, 36598380, 42698110, 51237732, 64047165, 85396220, 128094330, 256188660]

約数ペア:

[(1, 256188660), (2, 128094330), (3, 85396220), (4, 64047165), (5, 51237732), (6, 42698110), (7, 36598380), (10, 25618866), (12, 21349055), (13, 19706820), (14, 18299190), (15, 17079244), (20, 12809433), (21, 12199460), (26, 9853410), (28, 9149595), (30, 8539622), (35, 7319676), (39, 6568940), (42, 6099730), (49, 5228340), (52, 4926705), (60, 4269811), (65, 3941364), (70, 3659838), (78, 3284470), (84, 3049865), (91, 2815260), (98, 2614170), (105, 2439892), (130, 1970682), (140, 1829919), (147, 1742780), (156, 1642235), (182, 1407630), (195, 1313788), (196, 1307085), (210, 1219946), (245, 1045668), (260, 985341), (273, 938420), (294, 871390), (364, 703815), (390, 656894), (420, 609973), (455, 563052), (490, 522834), (546, 469210), (588, 435695), (637, 402180), (735, 348556), (780, 328447), (910, 281526), (980, 261417), (1092, 234605), (1274, 201090), (1365, 187684), (1470, 174278), (1820, 140763), (1911, 134060), (2548, 100545), (2730, 93842), (2940, 87139), (3185, 80436), (3822, 67030), (5460, 46921), (6370, 40218), (6703, 38220), (7644, 33515), (9555, 26812), (12740, 20109), (13406, 19110)]