21018452

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 47123496

約数和(自身を除く): 26105044

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 73, 91, 98, 113, 146, 182, 196, 226, 292, 364, 452, 511, 637, 791, 949, 1022, 1274, 1469, 1582, 1898, 2044, 2548, 2938, 3164, 3577, 3796, 5537, 5876, 6643, 7154, 8249, 10283, 11074, 13286, 14308, 16498, 20566, 22148, 26572, 32996, 41132, 46501, 57743, 71981, 93002, 107237, 115486, 143962, 186004, 214474, 230972, 287924, 404201, 428948, 750659, 808402, 1501318, 1616804, 3002636, 5254613, 10509226, 21018452]

約数ペア:

[(1, 21018452), (2, 10509226), (4, 5254613), (7, 3002636), (13, 1616804), (14, 1501318), (26, 808402), (28, 750659), (49, 428948), (52, 404201), (73, 287924), (91, 230972), (98, 214474), (113, 186004), (146, 143962), (182, 115486), (196, 107237), (226, 93002), (292, 71981), (364, 57743), (452, 46501), (511, 41132), (637, 32996), (791, 26572), (949, 22148), (1022, 20566), (1274, 16498), (1469, 14308), (1582, 13286), (1898, 11074), (2044, 10283), (2548, 8249), (2938, 7154), (3164, 6643), (3577, 5876), (3796, 5537)]