18980480

素因数分解:

$2^7\times 5^1\times {\mathrm{47}}^1\times {\mathrm{631}}^1$

素因数の和:697

約数の個数: 64

約数和(自身を含む): 46414080

約数和(自身を除く): 27433600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 188, 235, 320, 376, 470, 631, 640, 752, 940, 1262, 1504, 1880, 2524, 3008, 3155, 3760, 5048, 6016, 6310, 7520, 10096, 12620, 15040, 20192, 25240, 29657, 30080, 40384, 50480, 59314, 80768, 100960, 118628, 148285, 201920, 237256, 296570, 403840, 474512, 593140, 949024, 1186280, 1898048, 2372560, 3796096, 4745120, 9490240, 18980480]

約数ペア:

[(1, 18980480), (2, 9490240), (4, 4745120), (5, 3796096), (8, 2372560), (10, 1898048), (16, 1186280), (20, 949024), (32, 593140), (40, 474512), (47, 403840), (64, 296570), (80, 237256), (94, 201920), (128, 148285), (160, 118628), (188, 100960), (235, 80768), (320, 59314), (376, 50480), (470, 40384), (631, 30080), (640, 29657), (752, 25240), (940, 20192), (1262, 15040), (1504, 12620), (1880, 10096), (2524, 7520), (3008, 6310), (3155, 6016), (3760, 5048)]