19866420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{15767}}^1$

素因数の和:15789

約数の個数: 72

約数和(自身を含む): 68874624

約数和(自身を除く): 49008204

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, 15767, 31534, 47301, 63068, 78835, 94602, 110369, 141903, 157670, 189204, 220738, 236505, 283806, 315340, 331107, 441476, 473010, 551845, 567612, 662214, 709515, 946020, 993321, 1103690, 1324428, 1419030, 1655535, 1986642, 2207380, 2838060, 3311070, 3973284, 4966605, 6622140, 9933210, 19866420]

約数ペア:

[(1, 19866420), (2, 9933210), (3, 6622140), (4, 4966605), (5, 3973284), (6, 3311070), (7, 2838060), (9, 2207380), (10, 1986642), (12, 1655535), (14, 1419030), (15, 1324428), (18, 1103690), (20, 993321), (21, 946020), (28, 709515), (30, 662214), (35, 567612), (36, 551845), (42, 473010), (45, 441476), (60, 331107), (63, 315340), (70, 283806), (84, 236505), (90, 220738), (105, 189204), (126, 157670), (140, 141903), (180, 110369), (210, 94602), (252, 78835), (315, 63068), (420, 47301), (630, 31534), (1260, 15767)]