388289240

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{74101}}^1$

素因数の和:74243

約数の個数: 32

約数和(自身を含む): 880331760

約数和(自身を除く): 492042520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 74101, 148202, 296404, 370505, 592808, 741010, 1482020, 2964040, 9707231, 19414462, 38828924, 48536155, 77657848, 97072310, 194144620, 388289240]

約数ペア:

[(1, 388289240), (2, 194144620), (4, 97072310), (5, 77657848), (8, 48536155), (10, 38828924), (20, 19414462), (40, 9707231), (131, 2964040), (262, 1482020), (524, 741010), (655, 592808), (1048, 370505), (1310, 296404), (2620, 148202), (5240, 74101)]