2720820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{331}}^1$

素因数の和:480

約数の個数: 48

約数和(自身を含む): 7697088

約数和(自身を除く): 4976268

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 137, 274, 331, 411, 548, 662, 685, 822, 993, 1324, 1370, 1644, 1655, 1986, 2055, 2740, 3310, 3972, 4110, 4965, 6620, 8220, 9930, 19860, 45347, 90694, 136041, 181388, 226735, 272082, 453470, 544164, 680205, 906940, 1360410, 2720820]

約数ペア:

[(1, 2720820), (2, 1360410), (3, 906940), (4, 680205), (5, 544164), (6, 453470), (10, 272082), (12, 226735), (15, 181388), (20, 136041), (30, 90694), (60, 45347), (137, 19860), (274, 9930), (331, 8220), (411, 6620), (548, 4965), (662, 4110), (685, 3972), (822, 3310), (993, 2740), (1324, 2055), (1370, 1986), (1644, 1655)]