18008560

素因数分解:

$2^4\times 5^1\times {\mathrm{229}}^1\times {\mathrm{983}}^1$

素因数の和:1225

約数の個数: 40

約数和(自身を含む): 42095520

約数和(自身を除く): 24086960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 229, 458, 916, 983, 1145, 1832, 1966, 2290, 3664, 3932, 4580, 4915, 7864, 9160, 9830, 15728, 18320, 19660, 39320, 78640, 225107, 450214, 900428, 1125535, 1800856, 2251070, 3601712, 4502140, 9004280, 18008560]

約数ペア:

[(1, 18008560), (2, 9004280), (4, 4502140), (5, 3601712), (8, 2251070), (10, 1800856), (16, 1125535), (20, 900428), (40, 450214), (80, 225107), (229, 78640), (458, 39320), (916, 19660), (983, 18320), (1145, 15728), (1832, 9830), (1966, 9160), (2290, 7864), (3664, 4915), (3932, 4580)]