190053980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1\times {\mathrm{991}}^1$

素因数の和:1266

約数の個数: 48

約数和(自身を含む): 410640384

約数和(自身を除く): 220586404

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 223, 430, 446, 860, 892, 991, 1115, 1982, 2230, 3964, 4460, 4955, 9589, 9910, 19178, 19820, 38356, 42613, 47945, 85226, 95890, 170452, 191780, 213065, 220993, 426130, 441986, 852260, 883972, 1104965, 2209930, 4419860, 9502699, 19005398, 38010796, 47513495, 95026990, 190053980]

約数ペア:

[(1, 190053980), (2, 95026990), (4, 47513495), (5, 38010796), (10, 19005398), (20, 9502699), (43, 4419860), (86, 2209930), (172, 1104965), (215, 883972), (223, 852260), (430, 441986), (446, 426130), (860, 220993), (892, 213065), (991, 191780), (1115, 170452), (1982, 95890), (2230, 85226), (3964, 47945), (4460, 42613), (4955, 38356), (9589, 19820), (9910, 19178)]