778816640

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{661}}^1$

素因数の和:950

約数の個数: 128

約数和(自身を含む): 2139160320

約数和(自身を除く): 1360343680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 263, 280, 320, 448, 526, 560, 640, 661, 896, 1052, 1120, 1315, 1322, 1841, 2104, 2240, 2630, 2644, 3305, 3682, 4208, 4480, 4627, 5260, 5288, 6610, 7364, 8416, 9205, 9254, 10520, 10576, 13220, 14728, 16832, 18410, 18508, 21040, 21152, 23135, 26440, 29456, 33664, 36820, 37016, 42080, 42304, 46270, 52880, 58912, 73640, 74032, 84160, 84608, 92540, 105760, 117824, 147280, 148064, 168320, 173843, 185080, 211520, 235648, 294560, 296128, 347686, 370160, 423040, 589120, 592256, 695372, 740320, 869215, 1178240, 1216901, 1390744, 1480640, 1738430, 2433802, 2781488, 2961280, 3476860, 4867604, 5562976, 6084505, 6953720, 9735208, 11125952, 12169010, 13907440, 19470416, 22251904, 24338020, 27814880, 38940832, 48676040, 55629760, 77881664, 97352080, 111259520, 155763328, 194704160, 389408320, 778816640]

約数ペア:

[(1, 778816640), (2, 389408320), (4, 194704160), (5, 155763328), (7, 111259520), (8, 97352080), (10, 77881664), (14, 55629760), (16, 48676040), (20, 38940832), (28, 27814880), (32, 24338020), (35, 22251904), (40, 19470416), (56, 13907440), (64, 12169010), (70, 11125952), (80, 9735208), (112, 6953720), (128, 6084505), (140, 5562976), (160, 4867604), (224, 3476860), (263, 2961280), (280, 2781488), (320, 2433802), (448, 1738430), (526, 1480640), (560, 1390744), (640, 1216901), (661, 1178240), (896, 869215), (1052, 740320), (1120, 695372), (1315, 592256), (1322, 589120), (1841, 423040), (2104, 370160), (2240, 347686), (2630, 296128), (2644, 294560), (3305, 235648), (3682, 211520), (4208, 185080), (4480, 173843), (4627, 168320), (5260, 148064), (5288, 147280), (6610, 117824), (7364, 105760), (8416, 92540), (9205, 84608), (9254, 84160), (10520, 74032), (10576, 73640), (13220, 58912), (14728, 52880), (16832, 46270), (18410, 42304), (18508, 42080), (21040, 37016), (21152, 36820), (23135, 33664), (26440, 29456)]