81248580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64483}}^1$

素因数の和:64505

約数の個数: 72

約数和(自身を含む): 281666112

約数和(自身を除く): 200417532

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 64483, 128966, 193449, 257932, 322415, 386898, 451381, 580347, 644830, 773796, 902762, 967245, 1160694, 1289660, 1354143, 1805524, 1934490, 2256905, 2321388, 2708286, 2901735, 3868980, 4062429, 4513810, 5416572, 5803470, 6770715, 8124858, 9027620, 11606940, 13541430, 16249716, 20312145, 27082860, 40624290, 81248580]

約数ペア:

[(1, 81248580), (2, 40624290), (3, 27082860), (4, 20312145), (5, 16249716), (6, 13541430), (7, 11606940), (9, 9027620), (10, 8124858), (12, 6770715), (14, 5803470), (15, 5416572), (18, 4513810), (20, 4062429), (21, 3868980), (28, 2901735), (30, 2708286), (35, 2321388), (36, 2256905), (42, 1934490), (45, 1805524), (60, 1354143), (63, 1289660), (70, 1160694), (84, 967245), (90, 902762), (105, 773796), (126, 644830), (140, 580347), (180, 451381), (210, 386898), (252, 322415), (315, 257932), (420, 193449), (630, 128966), (1260, 64483)]