21214257.000000000

素因数分解:

$2^6\times 3^1\times 7^1\times {\mathrm{89399}}^1$

素因数の和:89421

約数の個数: 56

約数和(自身を含む): 363321600

約数和(自身を除く): 243169344

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 64, 84, 96, 112, 168, 192, 224, 336, 448, 672, 1344, 89399, 178798, 268197, 357596, 536394, 625793, 715192, 1072788, 1251586, 1430384, 1877379, 2145576, 2503172, 2860768, 3754758, 4291152, 5006344, 5721536, 7509516, 8582304, 10012688, 15019032, 17164608, 20025376, 30038064, 40050752, 60076128, 120152256]

約数ペア:

[(1, 120152256), (2, 60076128), (3, 40050752), (4, 30038064), (6, 20025376), (7, 17164608), (8, 15019032), (12, 10012688), (14, 8582304), (16, 7509516), (21, 5721536), (24, 5006344), (28, 4291152), (32, 3754758), (42, 2860768), (48, 2503172), (56, 2145576), (64, 1877379), (84, 1430384), (96, 1251586), (112, 1072788), (168, 715192), (192, 625793), (224, 536394), (336, 357596), (448, 268197), (672, 178798), (1344, 89399)]