1818440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{269}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 4446900

約数和(自身を除く): 2628460

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 269, 338, 520, 538, 676, 845, 1076, 1345, 1352, 1690, 2152, 2690, 3380, 3497, 5380, 6760, 6994, 10760, 13988, 17485, 27976, 34970, 45461, 69940, 90922, 139880, 181844, 227305, 363688, 454610, 909220, 1818440]

約数ペア:

[(1, 1818440), (2, 909220), (4, 454610), (5, 363688), (8, 227305), (10, 181844), (13, 139880), (20, 90922), (26, 69940), (40, 45461), (52, 34970), (65, 27976), (104, 17485), (130, 13988), (169, 10760), (260, 6994), (269, 6760), (338, 5380), (520, 3497), (538, 3380), (676, 2690), (845, 2152), (1076, 1690), (1345, 1352)]