21385070

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2297}}^1$

素因数の和:2337

約数の個数: 48

約数和(自身を含む): 47154960

約数和(自身を除く): 25769890

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 490, 665, 931, 1330, 1862, 2297, 4594, 4655, 9310, 11485, 16079, 22970, 32158, 43643, 80395, 87286, 112553, 160790, 218215, 225106, 305501, 436430, 562765, 611002, 1125530, 1527505, 2138507, 3055010, 4277014, 10692535, 21385070]

約数ペア:

[(1, 21385070), (2, 10692535), (5, 4277014), (7, 3055010), (10, 2138507), (14, 1527505), (19, 1125530), (35, 611002), (38, 562765), (49, 436430), (70, 305501), (95, 225106), (98, 218215), (133, 160790), (190, 112553), (245, 87286), (266, 80395), (490, 43643), (665, 32158), (931, 22970), (1330, 16079), (1862, 11485), (2297, 9310), (4594, 4655)]