2166920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:198

約数の個数: 64

約数和(自身を含む): 5702400

約数和(自身を除く): 3535480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 109, 140, 142, 218, 280, 284, 355, 436, 497, 545, 568, 710, 763, 872, 994, 1090, 1420, 1526, 1988, 2180, 2485, 2840, 3052, 3815, 3976, 4360, 4970, 6104, 7630, 7739, 9940, 15260, 15478, 19880, 30520, 30956, 38695, 54173, 61912, 77390, 108346, 154780, 216692, 270865, 309560, 433384, 541730, 1083460, 2166920]

約数ペア:

[(1, 2166920), (2, 1083460), (4, 541730), (5, 433384), (7, 309560), (8, 270865), (10, 216692), (14, 154780), (20, 108346), (28, 77390), (35, 61912), (40, 54173), (56, 38695), (70, 30956), (71, 30520), (109, 19880), (140, 15478), (142, 15260), (218, 9940), (280, 7739), (284, 7630), (355, 6104), (436, 4970), (497, 4360), (545, 3976), (568, 3815), (710, 3052), (763, 2840), (872, 2485), (994, 2180), (1090, 1988), (1420, 1526)]