28870478

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 56391552

約数和(自身を除く): 27521074

約数列:

[1, 2, 7, 13, 14, 26, 41, 53, 73, 82, 91, 106, 146, 182, 287, 371, 511, 533, 574, 689, 742, 949, 1022, 1066, 1378, 1898, 2173, 2993, 3731, 3869, 4346, 4823, 5986, 6643, 7462, 7738, 9646, 13286, 15211, 20951, 27083, 28249, 30422, 38909, 41902, 50297, 54166, 56498, 77818, 100594, 158629, 197743, 272363, 317258, 352079, 395486, 544726, 704158, 1110403, 2062177, 2220806, 4124354, 14435239, 28870478]

約数ペア:

[(1, 28870478), (2, 14435239), (7, 4124354), (13, 2220806), (14, 2062177), (26, 1110403), (41, 704158), (53, 544726), (73, 395486), (82, 352079), (91, 317258), (106, 272363), (146, 197743), (182, 158629), (287, 100594), (371, 77818), (511, 56498), (533, 54166), (574, 50297), (689, 41902), (742, 38909), (949, 30422), (1022, 28249), (1066, 27083), (1378, 20951), (1898, 15211), (2173, 13286), (2993, 9646), (3731, 7738), (3869, 7462), (4346, 6643), (4823, 5986)]