18986590

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:289

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 22485410

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 47, 58, 70, 94, 145, 199, 203, 235, 290, 329, 398, 406, 470, 658, 995, 1015, 1363, 1393, 1645, 1990, 2030, 2726, 2786, 3290, 5771, 6815, 6965, 9353, 9541, 11542, 13630, 13930, 18706, 19082, 28855, 40397, 46765, 47705, 57710, 65471, 80794, 93530, 95410, 130942, 201985, 271237, 327355, 403970, 542474, 654710, 1356185, 1898659, 2712370, 3797318, 9493295, 18986590]

約数ペア:

[(1, 18986590), (2, 9493295), (5, 3797318), (7, 2712370), (10, 1898659), (14, 1356185), (29, 654710), (35, 542474), (47, 403970), (58, 327355), (70, 271237), (94, 201985), (145, 130942), (199, 95410), (203, 93530), (235, 80794), (290, 65471), (329, 57710), (398, 47705), (406, 46765), (470, 40397), (658, 28855), (995, 19082), (1015, 18706), (1363, 13930), (1393, 13630), (1645, 11542), (1990, 9541), (2030, 9353), (2726, 6965), (2786, 6815), (3290, 5771)]