81041940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64319}}^1$

素因数の和:64341

約数の個数: 72

約数和(自身を含む): 280949760

約数和(自身を除く): 199907820

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, 64319, 128638, 192957, 257276, 321595, 385914, 450233, 578871, 643190, 771828, 900466, 964785, 1157742, 1286380, 1350699, 1800932, 1929570, 2251165, 2315484, 2701398, 2894355, 3859140, 4052097, 4502330, 5402796, 5788710, 6753495, 8104194, 9004660, 11577420, 13506990, 16208388, 20260485, 27013980, 40520970, 81041940]

約数ペア:

[(1, 81041940), (2, 40520970), (3, 27013980), (4, 20260485), (5, 16208388), (6, 13506990), (7, 11577420), (9, 9004660), (10, 8104194), (12, 6753495), (14, 5788710), (15, 5402796), (18, 4502330), (20, 4052097), (21, 3859140), (28, 2894355), (30, 2701398), (35, 2315484), (36, 2251165), (42, 1929570), (45, 1800932), (60, 1350699), (63, 1286380), (70, 1157742), (84, 964785), (90, 900466), (105, 771828), (126, 643190), (140, 578871), (180, 450233), (210, 385914), (252, 321595), (315, 257276), (420, 192957), (630, 128638), (1260, 64319)]