258020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:132

約数の個数: 48

約数和(自身を含む): 658560

約数和(自身を除く): 400540

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 97, 133, 140, 190, 194, 266, 380, 388, 485, 532, 665, 679, 970, 1330, 1358, 1843, 1940, 2660, 2716, 3395, 3686, 6790, 7372, 9215, 12901, 13580, 18430, 25802, 36860, 51604, 64505, 129010, 258020]

約数ペア:

[(1, 258020), (2, 129010), (4, 64505), (5, 51604), (7, 36860), (10, 25802), (14, 18430), (19, 13580), (20, 12901), (28, 9215), (35, 7372), (38, 6790), (70, 3686), (76, 3395), (95, 2716), (97, 2660), (133, 1940), (140, 1843), (190, 1358), (194, 1330), (266, 970), (380, 679), (388, 665), (485, 532)]