2489490

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:351

約数の個数: 48

約数和(自身を含む): 6552000

約数和(自身を除く): 4062510

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 139, 199, 278, 398, 417, 597, 695, 834, 995, 1194, 1251, 1390, 1791, 1990, 2085, 2502, 2985, 3582, 4170, 5970, 6255, 8955, 12510, 17910, 27661, 55322, 82983, 138305, 165966, 248949, 276610, 414915, 497898, 829830, 1244745, 2489490]

約数ペア:

[(1, 2489490), (2, 1244745), (3, 829830), (5, 497898), (6, 414915), (9, 276610), (10, 248949), (15, 165966), (18, 138305), (30, 82983), (45, 55322), (90, 27661), (139, 17910), (199, 12510), (278, 8955), (398, 6255), (417, 5970), (597, 4170), (695, 3582), (834, 2985), (995, 2502), (1194, 2085), (1251, 1990), (1390, 1791)]