212301880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{1801}}^1$

素因数の和:2240

約数の個数: 64

約数和(自身を含む): 547519680

約数和(自身を除く): 335217800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 421, 842, 1684, 1801, 2105, 2947, 3368, 3602, 4210, 5894, 7204, 8420, 9005, 11788, 12607, 14408, 14735, 16840, 18010, 23576, 25214, 29470, 36020, 50428, 58940, 63035, 72040, 100856, 117880, 126070, 252140, 504280, 758221, 1516442, 3032884, 3791105, 5307547, 6065768, 7582210, 10615094, 15164420, 21230188, 26537735, 30328840, 42460376, 53075470, 106150940, 212301880]

約数ペア:

[(1, 212301880), (2, 106150940), (4, 53075470), (5, 42460376), (7, 30328840), (8, 26537735), (10, 21230188), (14, 15164420), (20, 10615094), (28, 7582210), (35, 6065768), (40, 5307547), (56, 3791105), (70, 3032884), (140, 1516442), (280, 758221), (421, 504280), (842, 252140), (1684, 126070), (1801, 117880), (2105, 100856), (2947, 72040), (3368, 63035), (3602, 58940), (4210, 50428), (5894, 36020), (7204, 29470), (8420, 25214), (9005, 23576), (11788, 18010), (12607, 16840), (14408, 14735)]