256742220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1$

素因数の和:352

約数の個数: 192

約数和(自身を含む): 862202880

約数和(自身を除く): 605460660

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 29, 30, 35, 42, 58, 60, 70, 84, 87, 105, 107, 116, 140, 145, 174, 197, 203, 210, 214, 290, 321, 348, 394, 406, 420, 428, 435, 535, 580, 591, 609, 642, 749, 788, 812, 870, 985, 1015, 1070, 1182, 1218, 1284, 1379, 1498, 1605, 1740, 1970, 2030, 2140, 2247, 2364, 2436, 2758, 2955, 2996, 3045, 3103, 3210, 3745, 3940, 4060, 4137, 4494, 5516, 5713, 5910, 6090, 6206, 6420, 6895, 7490, 8274, 8988, 9309, 11235, 11426, 11820, 12180, 12412, 13790, 14980, 15515, 16548, 17139, 18618, 20685, 21079, 21721, 22470, 22852, 27580, 28565, 31030, 34278, 37236, 39991, 41370, 42158, 43442, 44940, 46545, 57130, 62060, 63237, 65163, 68556, 79982, 82740, 84316, 85695, 86884, 93090, 105395, 108605, 114260, 119973, 126474, 130326, 147553, 159964, 171390, 186180, 199955, 210790, 217210, 239946, 252948, 260652, 295106, 316185, 325815, 342780, 399910, 421580, 434420, 442659, 479892, 590212, 599865, 611291, 632370, 651630, 737765, 799820, 885318, 1199730, 1222582, 1264740, 1303260, 1475530, 1770636, 1833873, 2213295, 2399460, 2445164, 2951060, 3056455, 3667746, 4279037, 4426590, 6112910, 7335492, 8558074, 8853180, 9169365, 12225820, 12837111, 17116148, 18338730, 21395185, 25674222, 36677460, 42790370, 51348444, 64185555, 85580740, 128371110, 256742220]

約数ペア:

[(1, 256742220), (2, 128371110), (3, 85580740), (4, 64185555), (5, 51348444), (6, 42790370), (7, 36677460), (10, 25674222), (12, 21395185), (14, 18338730), (15, 17116148), (20, 12837111), (21, 12225820), (28, 9169365), (29, 8853180), (30, 8558074), (35, 7335492), (42, 6112910), (58, 4426590), (60, 4279037), (70, 3667746), (84, 3056455), (87, 2951060), (105, 2445164), (107, 2399460), (116, 2213295), (140, 1833873), (145, 1770636), (174, 1475530), (197, 1303260), (203, 1264740), (210, 1222582), (214, 1199730), (290, 885318), (321, 799820), (348, 737765), (394, 651630), (406, 632370), (420, 611291), (428, 599865), (435, 590212), (535, 479892), (580, 442659), (591, 434420), (609, 421580), (642, 399910), (749, 342780), (788, 325815), (812, 316185), (870, 295106), (985, 260652), (1015, 252948), (1070, 239946), (1182, 217210), (1218, 210790), (1284, 199955), (1379, 186180), (1498, 171390), (1605, 159964), (1740, 147553), (1970, 130326), (2030, 126474), (2140, 119973), (2247, 114260), (2364, 108605), (2436, 105395), (2758, 93090), (2955, 86884), (2996, 85695), (3045, 84316), (3103, 82740), (3210, 79982), (3745, 68556), (3940, 65163), (4060, 63237), (4137, 62060), (4494, 57130), (5516, 46545), (5713, 44940), (5910, 43442), (6090, 42158), (6206, 41370), (6420, 39991), (6895, 37236), (7490, 34278), (8274, 31030), (8988, 28565), (9309, 27580), (11235, 22852), (11426, 22470), (11820, 21721), (12180, 21079), (12412, 20685), (13790, 18618), (14980, 17139), (15515, 16548)]