21859136

素因数分解:

$2^6\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:128

約数の個数: 84

約数和(自身を含む): 49084992

約数和(自身を除く): 27225856

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 43, 47, 52, 64, 86, 94, 104, 169, 172, 188, 208, 338, 344, 376, 416, 559, 611, 676, 688, 752, 832, 1118, 1222, 1352, 1376, 1504, 2021, 2236, 2444, 2704, 2752, 3008, 4042, 4472, 4888, 5408, 7267, 7943, 8084, 8944, 9776, 10816, 14534, 15886, 16168, 17888, 19552, 26273, 29068, 31772, 32336, 35776, 39104, 52546, 58136, 63544, 64672, 105092, 116272, 127088, 129344, 210184, 232544, 254176, 341549, 420368, 465088, 508352, 683098, 840736, 1366196, 1681472, 2732392, 5464784, 10929568, 21859136]

約数ペア:

[(1, 21859136), (2, 10929568), (4, 5464784), (8, 2732392), (13, 1681472), (16, 1366196), (26, 840736), (32, 683098), (43, 508352), (47, 465088), (52, 420368), (64, 341549), (86, 254176), (94, 232544), (104, 210184), (169, 129344), (172, 127088), (188, 116272), (208, 105092), (338, 64672), (344, 63544), (376, 58136), (416, 52546), (559, 39104), (611, 35776), (676, 32336), (688, 31772), (752, 29068), (832, 26273), (1118, 19552), (1222, 17888), (1352, 16168), (1376, 15886), (1504, 14534), (2021, 10816), (2236, 9776), (2444, 8944), (2704, 8084), (2752, 7943), (3008, 7267), (4042, 5408), (4472, 4888)]