1286990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:164

約数の個数: 32

約数和(自身を含む): 2461536

約数和(自身を除く): 1174546

約数列:

[1, 2, 5, 10, 41, 43, 73, 82, 86, 146, 205, 215, 365, 410, 430, 730, 1763, 2993, 3139, 3526, 5986, 6278, 8815, 14965, 15695, 17630, 29930, 31390, 128699, 257398, 643495, 1286990]

約数ペア:

[(1, 1286990), (2, 643495), (5, 257398), (10, 128699), (41, 31390), (43, 29930), (73, 17630), (82, 15695), (86, 14965), (146, 8815), (205, 6278), (215, 5986), (365, 3526), (410, 3139), (430, 2993), (730, 1763)]