19982970

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:229

約数の個数: 128

約数和(自身を含む): 62092800

約数和(自身を除く): 42109830

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 97, 105, 109, 126, 135, 189, 194, 210, 218, 270, 291, 315, 327, 378, 485, 545, 582, 630, 654, 679, 763, 873, 945, 970, 981, 1090, 1358, 1455, 1526, 1635, 1746, 1890, 1962, 2037, 2289, 2619, 2910, 2943, 3270, 3395, 3815, 4074, 4365, 4578, 4905, 5238, 5886, 6111, 6790, 6867, 7630, 8730, 9810, 10185, 10573, 11445, 12222, 13095, 13734, 14715, 18333, 20370, 20601, 21146, 22890, 26190, 29430, 30555, 31719, 34335, 36666, 41202, 52865, 61110, 63438, 68670, 74011, 91665, 95157, 103005, 105730, 148022, 158595, 183330, 190314, 206010, 222033, 285471, 317190, 370055, 444066, 475785, 570942, 666099, 740110, 951570, 1110165, 1332198, 1427355, 1998297, 2220330, 2854710, 3330495, 3996594, 6660990, 9991485, 19982970]

約数ペア:

[(1, 19982970), (2, 9991485), (3, 6660990), (5, 3996594), (6, 3330495), (7, 2854710), (9, 2220330), (10, 1998297), (14, 1427355), (15, 1332198), (18, 1110165), (21, 951570), (27, 740110), (30, 666099), (35, 570942), (42, 475785), (45, 444066), (54, 370055), (63, 317190), (70, 285471), (90, 222033), (97, 206010), (105, 190314), (109, 183330), (126, 158595), (135, 148022), (189, 105730), (194, 103005), (210, 95157), (218, 91665), (270, 74011), (291, 68670), (315, 63438), (327, 61110), (378, 52865), (485, 41202), (545, 36666), (582, 34335), (630, 31719), (654, 30555), (679, 29430), (763, 26190), (873, 22890), (945, 21146), (970, 20601), (981, 20370), (1090, 18333), (1358, 14715), (1455, 13734), (1526, 13095), (1635, 12222), (1746, 11445), (1890, 10573), (1962, 10185), (2037, 9810), (2289, 8730), (2619, 7630), (2910, 6867), (2943, 6790), (3270, 6111), (3395, 5886), (3815, 5238), (4074, 4905), (4365, 4578)]