21504207998

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1\times {\mathrm{12923}}^1$

素因数の和:13209

約数の個数: 64

約数和(自身を含む): 40853901312

約数和(自身を除く): 19349693314

約数列:

[1, 2, 7, 13, 14, 26, 41, 82, 91, 182, 223, 287, 446, 533, 574, 1066, 1561, 2899, 3122, 3731, 5798, 7462, 9143, 12923, 18286, 20293, 25846, 40586, 64001, 90461, 118859, 128002, 167999, 180922, 237718, 335998, 529843, 832013, 1059686, 1175993, 1664026, 2351986, 2881829, 3708901, 5763658, 6887959, 7417802, 13775918, 20172803, 37463777, 40345606, 48215713, 74927554, 96431426, 118154989, 236309978, 262246439, 524492878, 827084923, 1536014857, 1654169846, 3072029714, 10752103999, 21504207998]

約数ペア:

[(1, 21504207998), (2, 10752103999), (7, 3072029714), (13, 1654169846), (14, 1536014857), (26, 827084923), (41, 524492878), (82, 262246439), (91, 236309978), (182, 118154989), (223, 96431426), (287, 74927554), (446, 48215713), (533, 40345606), (574, 37463777), (1066, 20172803), (1561, 13775918), (2899, 7417802), (3122, 6887959), (3731, 5763658), (5798, 3708901), (7462, 2881829), (9143, 2351986), (12923, 1664026), (18286, 1175993), (20293, 1059686), (25846, 832013), (40586, 529843), (64001, 335998), (90461, 237718), (118859, 180922), (128002, 167999)]