638081920

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{20347}}^1$

素因数の和:20380

約数の個数: 96

約数和(自身を含む): 1774549080

約数和(自身を除く): 1136467160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 280, 320, 392, 448, 490, 560, 640, 784, 896, 980, 1120, 1568, 1960, 2240, 3136, 3920, 4480, 6272, 7840, 15680, 20347, 31360, 40694, 81388, 101735, 142429, 162776, 203470, 284858, 325552, 406940, 569716, 651104, 712145, 813880, 997003, 1139432, 1302208, 1424290, 1627760, 1994006, 2278864, 2604416, 2848580, 3255520, 3988012, 4557728, 4985015, 5697160, 6511040, 7976024, 9115456, 9970030, 11394320, 13022080, 15952048, 18230912, 19940060, 22788640, 31904096, 39880120, 45577280, 63808192, 79760240, 91154560, 127616384, 159520480, 319040960, 638081920]

約数ペア:

[(1, 638081920), (2, 319040960), (4, 159520480), (5, 127616384), (7, 91154560), (8, 79760240), (10, 63808192), (14, 45577280), (16, 39880120), (20, 31904096), (28, 22788640), (32, 19940060), (35, 18230912), (40, 15952048), (49, 13022080), (56, 11394320), (64, 9970030), (70, 9115456), (80, 7976024), (98, 6511040), (112, 5697160), (128, 4985015), (140, 4557728), (160, 3988012), (196, 3255520), (224, 2848580), (245, 2604416), (280, 2278864), (320, 1994006), (392, 1627760), (448, 1424290), (490, 1302208), (560, 1139432), (640, 997003), (784, 813880), (896, 712145), (980, 651104), (1120, 569716), (1568, 406940), (1960, 325552), (2240, 284858), (3136, 203470), (3920, 162776), (4480, 142429), (6272, 101735), (7840, 81388), (15680, 40694), (20347, 31360)]