28791800

素因数分解:

$2^3\times 5^2\times {\mathrm{359}}^1\times {\mathrm{401}}^1$

素因数の和:776

約数の個数: 48

約数和(自身を含む): 67294800

約数和(自身を除く): 38503000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 359, 401, 718, 802, 1436, 1604, 1795, 2005, 2872, 3208, 3590, 4010, 7180, 8020, 8975, 10025, 14360, 16040, 17950, 20050, 35900, 40100, 71800, 80200, 143959, 287918, 575836, 719795, 1151672, 1439590, 2879180, 3598975, 5758360, 7197950, 14395900, 28791800]

約数ペア:

[(1, 28791800), (2, 14395900), (4, 7197950), (5, 5758360), (8, 3598975), (10, 2879180), (20, 1439590), (25, 1151672), (40, 719795), (50, 575836), (100, 287918), (200, 143959), (359, 80200), (401, 71800), (718, 40100), (802, 35900), (1436, 20050), (1604, 17950), (1795, 16040), (2005, 14360), (2872, 10025), (3208, 8975), (3590, 8020), (4010, 7180)]