12921140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{919}}^1$

素因数の和:984

約数の個数: 48

約数和(自身を含む): 29366400

約数和(自身を除く): 16445260

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 74, 76, 95, 148, 185, 190, 370, 380, 703, 740, 919, 1406, 1838, 2812, 3515, 3676, 4595, 7030, 9190, 14060, 17461, 18380, 34003, 34922, 68006, 69844, 87305, 136012, 170015, 174610, 340030, 349220, 646057, 680060, 1292114, 2584228, 3230285, 6460570, 12921140]

約数ペア:

[(1, 12921140), (2, 6460570), (4, 3230285), (5, 2584228), (10, 1292114), (19, 680060), (20, 646057), (37, 349220), (38, 340030), (74, 174610), (76, 170015), (95, 136012), (148, 87305), (185, 69844), (190, 68006), (370, 34922), (380, 34003), (703, 18380), (740, 17461), (919, 14060), (1406, 9190), (1838, 7030), (2812, 4595), (3515, 3676)]