19909860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{7717}}^1$

素因数の和:7772

約数の個数: 48

約数和(自身を含む): 57051456

約数和(自身を除く): 37141596

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 7717, 15434, 23151, 30868, 38585, 46302, 77170, 92604, 115755, 154340, 231510, 331831, 463020, 663662, 995493, 1327324, 1659155, 1990986, 3318310, 3981972, 4977465, 6636620, 9954930, 19909860]

約数ペア:

[(1, 19909860), (2, 9954930), (3, 6636620), (4, 4977465), (5, 3981972), (6, 3318310), (10, 1990986), (12, 1659155), (15, 1327324), (20, 995493), (30, 663662), (43, 463020), (60, 331831), (86, 231510), (129, 154340), (172, 115755), (215, 92604), (258, 77170), (430, 46302), (516, 38585), (645, 30868), (860, 23151), (1290, 15434), (2580, 7717)]