18188720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1879}}^1$

素因数の和:1914

約数の個数: 60

約数和(自身を含む): 46507440

約数和(自身を除く): 28318720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1879, 1936, 2420, 3758, 4840, 7516, 9395, 9680, 15032, 18790, 20669, 30064, 37580, 41338, 75160, 82676, 103345, 150320, 165352, 206690, 227359, 330704, 413380, 454718, 826760, 909436, 1136795, 1653520, 1818872, 2273590, 3637744, 4547180, 9094360, 18188720]

約数ペア:

[(1, 18188720), (2, 9094360), (4, 4547180), (5, 3637744), (8, 2273590), (10, 1818872), (11, 1653520), (16, 1136795), (20, 909436), (22, 826760), (40, 454718), (44, 413380), (55, 330704), (80, 227359), (88, 206690), (110, 165352), (121, 150320), (176, 103345), (220, 82676), (242, 75160), (440, 41338), (484, 37580), (605, 30064), (880, 20669), (968, 18790), (1210, 15032), (1879, 9680), (1936, 9395), (2420, 7516), (3758, 4840)]