2820120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:416

約数の個数: 64

約数和(自身を含む): 8605440

約数和(自身を除く): 5785320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 331, 355, 426, 568, 662, 710, 852, 993, 1065, 1324, 1420, 1655, 1704, 1986, 2130, 2648, 2840, 3310, 3972, 4260, 4965, 6620, 7944, 8520, 9930, 13240, 19860, 23501, 39720, 47002, 70503, 94004, 117505, 141006, 188008, 235010, 282012, 352515, 470020, 564024, 705030, 940040, 1410060, 2820120]

約数ペア:

[(1, 2820120), (2, 1410060), (3, 940040), (4, 705030), (5, 564024), (6, 470020), (8, 352515), (10, 282012), (12, 235010), (15, 188008), (20, 141006), (24, 117505), (30, 94004), (40, 70503), (60, 47002), (71, 39720), (120, 23501), (142, 19860), (213, 13240), (284, 9930), (331, 8520), (355, 7944), (426, 6620), (568, 4965), (662, 4260), (710, 3972), (852, 3310), (993, 2840), (1065, 2648), (1324, 2130), (1420, 1986), (1655, 1704)]