20785860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3121}}^1$

素因数の和:3173

約数の個数: 72

約数和(自身を含む): 64775256

約数和(自身を除く): 43989396

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 222, 333, 370, 444, 555, 666, 740, 1110, 1332, 1665, 2220, 3121, 3330, 6242, 6660, 9363, 12484, 15605, 18726, 28089, 31210, 37452, 46815, 56178, 62420, 93630, 112356, 115477, 140445, 187260, 230954, 280890, 346431, 461908, 561780, 577385, 692862, 1039293, 1154770, 1385724, 1732155, 2078586, 2309540, 3464310, 4157172, 5196465, 6928620, 10392930, 20785860]

約数ペア:

[(1, 20785860), (2, 10392930), (3, 6928620), (4, 5196465), (5, 4157172), (6, 3464310), (9, 2309540), (10, 2078586), (12, 1732155), (15, 1385724), (18, 1154770), (20, 1039293), (30, 692862), (36, 577385), (37, 561780), (45, 461908), (60, 346431), (74, 280890), (90, 230954), (111, 187260), (148, 140445), (180, 115477), (185, 112356), (222, 93630), (333, 62420), (370, 56178), (444, 46815), (555, 37452), (666, 31210), (740, 28089), (1110, 18726), (1332, 15605), (1665, 12484), (2220, 9363), (3121, 6660), (3330, 6242)]