77984500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^2\times {\mathrm{1289}}^1$

素因数の和:1330

約数の個数: 72

約数和(自身を含む): 187354440

約数和(自身を除く): 109369940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 121, 125, 220, 242, 250, 275, 484, 500, 550, 605, 1100, 1210, 1289, 1375, 2420, 2578, 2750, 3025, 5156, 5500, 6050, 6445, 12100, 12890, 14179, 15125, 25780, 28358, 30250, 32225, 56716, 60500, 64450, 70895, 128900, 141790, 155969, 161125, 283580, 311938, 322250, 354475, 623876, 644500, 708950, 779845, 1417900, 1559690, 1772375, 3119380, 3544750, 3899225, 7089500, 7798450, 15596900, 19496125, 38992250, 77984500]

約数ペア:

[(1, 77984500), (2, 38992250), (4, 19496125), (5, 15596900), (10, 7798450), (11, 7089500), (20, 3899225), (22, 3544750), (25, 3119380), (44, 1772375), (50, 1559690), (55, 1417900), (100, 779845), (110, 708950), (121, 644500), (125, 623876), (220, 354475), (242, 322250), (250, 311938), (275, 283580), (484, 161125), (500, 155969), (550, 141790), (605, 128900), (1100, 70895), (1210, 64450), (1289, 60500), (1375, 56716), (2420, 32225), (2578, 30250), (2750, 28358), (3025, 25780), (5156, 15125), (5500, 14179), (6050, 12890), (6445, 12100)]