215881799

素因数分解:

$7^3\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:388

約数の個数: 32

約数和(自身を含む): 264192000

約数和(自身を除く): 48310201

約数列:

[1, 7, 31, 49, 79, 217, 257, 343, 553, 1519, 1799, 2449, 3871, 7967, 10633, 12593, 17143, 20303, 27097, 55769, 88151, 120001, 142121, 390383, 629393, 840007, 994847, 2732681, 4405751, 6963929, 30840257, 215881799]

約数ペア:

[(1, 215881799), (7, 30840257), (31, 6963929), (49, 4405751), (79, 2732681), (217, 994847), (257, 840007), (343, 629393), (553, 390383), (1519, 142121), (1799, 120001), (2449, 88151), (3871, 55769), (7967, 27097), (10633, 20303), (12593, 17143)]