20404384

素因数分解:

$2^5\times 7^3\times {\mathrm{11}}^1\times {\mathrm{13}}^2$

素因数の和:68

約数の個数: 144

約数和(自身を含む): 55339200

約数和(自身を除く): 34934816

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 32, 44, 49, 52, 56, 77, 88, 91, 98, 104, 112, 143, 154, 169, 176, 182, 196, 208, 224, 286, 308, 338, 343, 352, 364, 392, 416, 539, 572, 616, 637, 676, 686, 728, 784, 1001, 1078, 1144, 1183, 1232, 1274, 1352, 1372, 1456, 1568, 1859, 2002, 2156, 2288, 2366, 2464, 2548, 2704, 2744, 2912, 3718, 3773, 4004, 4312, 4459, 4576, 4732, 5096, 5408, 5488, 7007, 7436, 7546, 8008, 8281, 8624, 8918, 9464, 10192, 10976, 13013, 14014, 14872, 15092, 16016, 16562, 17248, 17836, 18928, 20384, 26026, 28028, 29744, 30184, 32032, 33124, 35672, 37856, 49049, 52052, 56056, 57967, 59488, 60368, 66248, 71344, 91091, 98098, 104104, 112112, 115934, 120736, 132496, 142688, 182182, 196196, 208208, 224224, 231868, 264992, 364364, 392392, 416416, 463736, 637637, 728728, 784784, 927472, 1275274, 1457456, 1569568, 1854944, 2550548, 2914912, 5101096, 10202192, 20404384]

約数ペア:

[(1, 20404384), (2, 10202192), (4, 5101096), (7, 2914912), (8, 2550548), (11, 1854944), (13, 1569568), (14, 1457456), (16, 1275274), (22, 927472), (26, 784784), (28, 728728), (32, 637637), (44, 463736), (49, 416416), (52, 392392), (56, 364364), (77, 264992), (88, 231868), (91, 224224), (98, 208208), (104, 196196), (112, 182182), (143, 142688), (154, 132496), (169, 120736), (176, 115934), (182, 112112), (196, 104104), (208, 98098), (224, 91091), (286, 71344), (308, 66248), (338, 60368), (343, 59488), (352, 57967), (364, 56056), (392, 52052), (416, 49049), (539, 37856), (572, 35672), (616, 33124), (637, 32032), (676, 30184), (686, 29744), (728, 28028), (784, 26026), (1001, 20384), (1078, 18928), (1144, 17836), (1183, 17248), (1232, 16562), (1274, 16016), (1352, 15092), (1372, 14872), (1456, 14014), (1568, 13013), (1859, 10976), (2002, 10192), (2156, 9464), (2288, 8918), (2366, 8624), (2464, 8281), (2548, 8008), (2704, 7546), (2744, 7436), (2912, 7007), (3718, 5488), (3773, 5408), (4004, 5096), (4312, 4732), (4459, 4576)]