21288512

素因数分解:

$2^6\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:140

約数の個数: 112

約数和(自身を含む): 52913280

約数和(自身を除く): 31624768

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 41, 56, 61, 64, 76, 82, 112, 122, 133, 152, 164, 224, 244, 266, 287, 304, 328, 427, 448, 488, 532, 574, 608, 656, 779, 854, 976, 1064, 1148, 1159, 1216, 1312, 1558, 1708, 1952, 2128, 2296, 2318, 2501, 2624, 3116, 3416, 3904, 4256, 4592, 4636, 5002, 5453, 6232, 6832, 8113, 8512, 9184, 9272, 10004, 10906, 12464, 13664, 16226, 17507, 18368, 18544, 20008, 21812, 24928, 27328, 32452, 35014, 37088, 40016, 43624, 47519, 49856, 64904, 70028, 74176, 80032, 87248, 95038, 129808, 140056, 160064, 174496, 190076, 259616, 280112, 332633, 348992, 380152, 519232, 560224, 665266, 760304, 1120448, 1330532, 1520608, 2661064, 3041216, 5322128, 10644256, 21288512]

約数ペア:

[(1, 21288512), (2, 10644256), (4, 5322128), (7, 3041216), (8, 2661064), (14, 1520608), (16, 1330532), (19, 1120448), (28, 760304), (32, 665266), (38, 560224), (41, 519232), (56, 380152), (61, 348992), (64, 332633), (76, 280112), (82, 259616), (112, 190076), (122, 174496), (133, 160064), (152, 140056), (164, 129808), (224, 95038), (244, 87248), (266, 80032), (287, 74176), (304, 70028), (328, 64904), (427, 49856), (448, 47519), (488, 43624), (532, 40016), (574, 37088), (608, 35014), (656, 32452), (779, 27328), (854, 24928), (976, 21812), (1064, 20008), (1148, 18544), (1159, 18368), (1216, 17507), (1312, 16226), (1558, 13664), (1708, 12464), (1952, 10906), (2128, 10004), (2296, 9272), (2318, 9184), (2501, 8512), (2624, 8113), (3116, 6832), (3416, 6232), (3904, 5453), (4256, 5002), (4592, 4636)]