12780540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:172

約数の個数: 144

約数和(自身を含む): 42325920

約数和(自身を除く): 29545380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 37, 38, 45, 57, 60, 74, 76, 90, 95, 101, 111, 114, 148, 171, 180, 185, 190, 202, 222, 228, 285, 303, 333, 342, 370, 380, 404, 444, 505, 555, 570, 606, 666, 684, 703, 740, 855, 909, 1010, 1110, 1140, 1212, 1332, 1406, 1515, 1665, 1710, 1818, 1919, 2020, 2109, 2220, 2812, 3030, 3330, 3420, 3515, 3636, 3737, 3838, 4218, 4545, 5757, 6060, 6327, 6660, 7030, 7474, 7676, 8436, 9090, 9595, 10545, 11211, 11514, 12654, 14060, 14948, 17271, 18180, 18685, 19190, 21090, 22422, 23028, 25308, 28785, 31635, 33633, 34542, 37370, 38380, 42180, 44844, 56055, 57570, 63270, 67266, 69084, 71003, 74740, 86355, 112110, 115140, 126540, 134532, 142006, 168165, 172710, 213009, 224220, 284012, 336330, 345420, 355015, 426018, 639027, 672660, 710030, 852036, 1065045, 1278054, 1420060, 2130090, 2556108, 3195135, 4260180, 6390270, 12780540]

約数ペア:

[(1, 12780540), (2, 6390270), (3, 4260180), (4, 3195135), (5, 2556108), (6, 2130090), (9, 1420060), (10, 1278054), (12, 1065045), (15, 852036), (18, 710030), (19, 672660), (20, 639027), (30, 426018), (36, 355015), (37, 345420), (38, 336330), (45, 284012), (57, 224220), (60, 213009), (74, 172710), (76, 168165), (90, 142006), (95, 134532), (101, 126540), (111, 115140), (114, 112110), (148, 86355), (171, 74740), (180, 71003), (185, 69084), (190, 67266), (202, 63270), (222, 57570), (228, 56055), (285, 44844), (303, 42180), (333, 38380), (342, 37370), (370, 34542), (380, 33633), (404, 31635), (444, 28785), (505, 25308), (555, 23028), (570, 22422), (606, 21090), (666, 19190), (684, 18685), (703, 18180), (740, 17271), (855, 14948), (909, 14060), (1010, 12654), (1110, 11514), (1140, 11211), (1212, 10545), (1332, 9595), (1406, 9090), (1515, 8436), (1665, 7676), (1710, 7474), (1818, 7030), (1919, 6660), (2020, 6327), (2109, 6060), (2220, 5757), (2812, 4545), (3030, 4218), (3330, 3838), (3420, 3737), (3515, 3636)]