289023820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{40031}}^1$

素因数の和:40078

約数の個数: 36

約数和(自身を含む): 640592064

約数和(自身を除く): 351568244

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 7220, 40031, 80062, 160124, 200155, 400310, 760589, 800620, 1521178, 3042356, 3802945, 7605890, 14451191, 15211780, 28902382, 57804764, 72255955, 144511910, 289023820]

約数ペア:

[(1, 289023820), (2, 144511910), (4, 72255955), (5, 57804764), (10, 28902382), (19, 15211780), (20, 14451191), (38, 7605890), (76, 3802945), (95, 3042356), (190, 1521178), (361, 800620), (380, 760589), (722, 400310), (1444, 200155), (1805, 160124), (3610, 80062), (7220, 40031)]