81198180

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{21481}}^1$

素因数の和:21506

約数の個数: 96

約数和(自身を含む): 288718080

約数和(自身を除く): 207519900

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 21481, 42962, 64443, 85924, 107405, 128886, 150367, 193329, 214810, 257772, 300734, 322215, 386658, 429620, 451101, 579987, 601468, 644430, 751835, 773316, 902202, 966645, 1159974, 1288860, 1353303, 1503670, 1804404, 1933290, 2255505, 2319948, 2706606, 2899935, 3007340, 3866580, 4059909, 4511010, 5413212, 5799870, 6766515, 8119818, 9022020, 11599740, 13533030, 16239636, 20299545, 27066060, 40599090, 81198180]

約数ペア:

[(1, 81198180), (2, 40599090), (3, 27066060), (4, 20299545), (5, 16239636), (6, 13533030), (7, 11599740), (9, 9022020), (10, 8119818), (12, 6766515), (14, 5799870), (15, 5413212), (18, 4511010), (20, 4059909), (21, 3866580), (27, 3007340), (28, 2899935), (30, 2706606), (35, 2319948), (36, 2255505), (42, 1933290), (45, 1804404), (54, 1503670), (60, 1353303), (63, 1288860), (70, 1159974), (84, 966645), (90, 902202), (105, 773316), (108, 751835), (126, 644430), (135, 601468), (140, 579987), (180, 451101), (189, 429620), (210, 386658), (252, 322215), (270, 300734), (315, 257772), (378, 214810), (420, 193329), (540, 150367), (630, 128886), (756, 107405), (945, 85924), (1260, 64443), (1890, 42962), (3780, 21481)]