2017980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:156

約数の個数: 96

約数和(自身を含む): 6511680

約数和(自身を除く): 4493700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 37, 45, 54, 60, 74, 90, 101, 108, 111, 135, 148, 180, 185, 202, 222, 270, 303, 333, 370, 404, 444, 505, 540, 555, 606, 666, 740, 909, 999, 1010, 1110, 1212, 1332, 1515, 1665, 1818, 1998, 2020, 2220, 2727, 3030, 3330, 3636, 3737, 3996, 4545, 4995, 5454, 6060, 6660, 7474, 9090, 9990, 10908, 11211, 13635, 14948, 18180, 18685, 19980, 22422, 27270, 33633, 37370, 44844, 54540, 56055, 67266, 74740, 100899, 112110, 134532, 168165, 201798, 224220, 336330, 403596, 504495, 672660, 1008990, 2017980]

約数ペア:

[(1, 2017980), (2, 1008990), (3, 672660), (4, 504495), (5, 403596), (6, 336330), (9, 224220), (10, 201798), (12, 168165), (15, 134532), (18, 112110), (20, 100899), (27, 74740), (30, 67266), (36, 56055), (37, 54540), (45, 44844), (54, 37370), (60, 33633), (74, 27270), (90, 22422), (101, 19980), (108, 18685), (111, 18180), (135, 14948), (148, 13635), (180, 11211), (185, 10908), (202, 9990), (222, 9090), (270, 7474), (303, 6660), (333, 6060), (370, 5454), (404, 4995), (444, 4545), (505, 3996), (540, 3737), (555, 3636), (606, 3330), (666, 3030), (740, 2727), (909, 2220), (999, 2020), (1010, 1998), (1110, 1818), (1212, 1665), (1332, 1515)]