642811790

素因数分解:

$2^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{227}}^1\times {\mathrm{1423}}^1$

素因数の和:1856

約数の個数: 32

約数和(自身を含む): 1168819200

約数和(自身を除く): 526007410

約数列:

[1, 2, 5, 10, 199, 227, 398, 454, 995, 1135, 1423, 1990, 2270, 2846, 7115, 14230, 45173, 90346, 225865, 283177, 323021, 451730, 566354, 646042, 1415885, 1615105, 2831770, 3230210, 64281179, 128562358, 321405895, 642811790]

約数ペア:

[(1, 642811790), (2, 321405895), (5, 128562358), (10, 64281179), (199, 3230210), (227, 2831770), (398, 1615105), (454, 1415885), (995, 646042), (1135, 566354), (1423, 451730), (1990, 323021), (2270, 283177), (2846, 225865), (7115, 90346), (14230, 45173)]