7800980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{601}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 18204480

約数和(自身を除く): 10403500

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 59, 110, 118, 220, 236, 295, 590, 601, 649, 1180, 1202, 1298, 2404, 2596, 3005, 3245, 6010, 6490, 6611, 12020, 12980, 13222, 26444, 33055, 35459, 66110, 70918, 132220, 141836, 177295, 354590, 390049, 709180, 780098, 1560196, 1950245, 3900490, 7800980]

約数ペア:

[(1, 7800980), (2, 3900490), (4, 1950245), (5, 1560196), (10, 780098), (11, 709180), (20, 390049), (22, 354590), (44, 177295), (55, 141836), (59, 132220), (110, 70918), (118, 66110), (220, 35459), (236, 33055), (295, 26444), (590, 13222), (601, 12980), (649, 12020), (1180, 6611), (1202, 6490), (1298, 6010), (2404, 3245), (2596, 3005)]