19811820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1097}}^1$

素因数の和:1159

約数の個数: 96

約数和(自身を含む): 64931328

約数和(自身を除く): 45119508

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 43, 60, 70, 84, 86, 105, 129, 140, 172, 210, 215, 258, 301, 420, 430, 516, 602, 645, 860, 903, 1097, 1204, 1290, 1505, 1806, 2194, 2580, 3010, 3291, 3612, 4388, 4515, 5485, 6020, 6582, 7679, 9030, 10970, 13164, 15358, 16455, 18060, 21940, 23037, 30716, 32910, 38395, 46074, 47171, 65820, 76790, 92148, 94342, 115185, 141513, 153580, 188684, 230370, 235855, 283026, 330197, 460740, 471710, 566052, 660394, 707565, 943420, 990591, 1320788, 1415130, 1650985, 1981182, 2830260, 3301970, 3962364, 4952955, 6603940, 9905910, 19811820]

約数ペア:

[(1, 19811820), (2, 9905910), (3, 6603940), (4, 4952955), (5, 3962364), (6, 3301970), (7, 2830260), (10, 1981182), (12, 1650985), (14, 1415130), (15, 1320788), (20, 990591), (21, 943420), (28, 707565), (30, 660394), (35, 566052), (42, 471710), (43, 460740), (60, 330197), (70, 283026), (84, 235855), (86, 230370), (105, 188684), (129, 153580), (140, 141513), (172, 115185), (210, 94342), (215, 92148), (258, 76790), (301, 65820), (420, 47171), (430, 46074), (516, 38395), (602, 32910), (645, 30716), (860, 23037), (903, 21940), (1097, 18060), (1204, 16455), (1290, 15358), (1505, 13164), (1806, 10970), (2194, 9030), (2580, 7679), (3010, 6582), (3291, 6020), (3612, 5485), (4388, 4515)]