2543220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:285

約数の個数: 72

約数和(自身を含む): 7862400

約数和(自身を除く): 5319180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 199, 213, 284, 355, 398, 426, 597, 639, 710, 796, 852, 995, 1065, 1194, 1278, 1420, 1791, 1990, 2130, 2388, 2556, 2985, 3195, 3582, 3980, 4260, 5970, 6390, 7164, 8955, 11940, 12780, 14129, 17910, 28258, 35820, 42387, 56516, 70645, 84774, 127161, 141290, 169548, 211935, 254322, 282580, 423870, 508644, 635805, 847740, 1271610, 2543220]

約数ペア:

[(1, 2543220), (2, 1271610), (3, 847740), (4, 635805), (5, 508644), (6, 423870), (9, 282580), (10, 254322), (12, 211935), (15, 169548), (18, 141290), (20, 127161), (30, 84774), (36, 70645), (45, 56516), (60, 42387), (71, 35820), (90, 28258), (142, 17910), (180, 14129), (199, 12780), (213, 11940), (284, 8955), (355, 7164), (398, 6390), (426, 5970), (597, 4260), (639, 3980), (710, 3582), (796, 3195), (852, 2985), (995, 2556), (1065, 2388), (1194, 2130), (1278, 1990), (1420, 1791)]