19713160

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1229}}^1$

素因数の和:1641

約数の個数: 32

約数和(自身を含む): 44501400

約数和(自身を除く): 24788240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1229, 1604, 2005, 2458, 3208, 4010, 4916, 6145, 8020, 9832, 12290, 16040, 24580, 49160, 492829, 985658, 1971316, 2464145, 3942632, 4928290, 9856580, 19713160]

約数ペア:

[(1, 19713160), (2, 9856580), (4, 4928290), (5, 3942632), (8, 2464145), (10, 1971316), (20, 985658), (40, 492829), (401, 49160), (802, 24580), (1229, 16040), (1604, 12290), (2005, 9832), (2458, 8020), (3208, 6145), (4010, 4916)]