638523928

素因数分解:

$2^3\times 7^1\times {\mathrm{223}}^1\times {\mathrm{51131}}^1$

素因数の和:51367

約数の個数: 32

約数和(自身を含む): 1374428160

約数和(自身を除く): 735904232

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 223, 446, 892, 1561, 1784, 3122, 6244, 12488, 51131, 102262, 204524, 357917, 409048, 715834, 1431668, 2863336, 11402213, 22804426, 45608852, 79815491, 91217704, 159630982, 319261964, 638523928]

約数ペア:

[(1, 638523928), (2, 319261964), (4, 159630982), (7, 91217704), (8, 79815491), (14, 45608852), (28, 22804426), (56, 11402213), (223, 2863336), (446, 1431668), (892, 715834), (1561, 409048), (1784, 357917), (3122, 204524), (6244, 102262), (12488, 51131)]