81720780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{28979}}^1$

素因数の和:29038

約数の個数: 48

約数和(自身を含む): 233694720

約数和(自身を除く): 151973940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 47, 60, 94, 141, 188, 235, 282, 470, 564, 705, 940, 1410, 2820, 28979, 57958, 86937, 115916, 144895, 173874, 289790, 347748, 434685, 579580, 869370, 1362013, 1738740, 2724026, 4086039, 5448052, 6810065, 8172078, 13620130, 16344156, 20430195, 27240260, 40860390, 81720780]

約数ペア:

[(1, 81720780), (2, 40860390), (3, 27240260), (4, 20430195), (5, 16344156), (6, 13620130), (10, 8172078), (12, 6810065), (15, 5448052), (20, 4086039), (30, 2724026), (47, 1738740), (60, 1362013), (94, 869370), (141, 579580), (188, 434685), (235, 347748), (282, 289790), (470, 173874), (564, 144895), (705, 115916), (940, 86937), (1410, 57958), (2820, 28979)]