16978220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{701}}^1$

素因数の和:890

約数の個数: 48

約数和(自身を含む): 41041728

約数和(自身を除く): 24063508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 173, 346, 692, 701, 865, 1211, 1402, 1730, 2422, 2804, 3460, 3505, 4844, 4907, 6055, 7010, 9814, 12110, 14020, 19628, 24220, 24535, 49070, 98140, 121273, 242546, 485092, 606365, 848911, 1212730, 1697822, 2425460, 3395644, 4244555, 8489110, 16978220]

約数ペア:

[(1, 16978220), (2, 8489110), (4, 4244555), (5, 3395644), (7, 2425460), (10, 1697822), (14, 1212730), (20, 848911), (28, 606365), (35, 485092), (70, 242546), (140, 121273), (173, 98140), (346, 49070), (692, 24535), (701, 24220), (865, 19628), (1211, 14020), (1402, 12110), (1730, 9814), (2422, 7010), (2804, 6055), (3460, 4907), (3505, 4844)]