18622280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{229}}^1$

素因数の和:366

約数の個数: 64

約数和(自身を含む): 44712000

約数和(自身を除く): 26089720

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 107, 152, 190, 214, 229, 380, 428, 458, 535, 760, 856, 916, 1070, 1145, 1832, 2033, 2140, 2290, 4066, 4280, 4351, 4580, 8132, 8702, 9160, 10165, 16264, 17404, 20330, 21755, 24503, 34808, 40660, 43510, 49006, 81320, 87020, 98012, 122515, 174040, 196024, 245030, 465557, 490060, 931114, 980120, 1862228, 2327785, 3724456, 4655570, 9311140, 18622280]

約数ペア:

[(1, 18622280), (2, 9311140), (4, 4655570), (5, 3724456), (8, 2327785), (10, 1862228), (19, 980120), (20, 931114), (38, 490060), (40, 465557), (76, 245030), (95, 196024), (107, 174040), (152, 122515), (190, 98012), (214, 87020), (229, 81320), (380, 49006), (428, 43510), (458, 40660), (535, 34808), (760, 24503), (856, 21755), (916, 20330), (1070, 17404), (1145, 16264), (1832, 10165), (2033, 9160), (2140, 8702), (2290, 8132), (4066, 4580), (4280, 4351)]