1778980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 4346496

約数和(自身を除く): 2567516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 131, 140, 194, 262, 388, 485, 524, 655, 679, 917, 970, 1310, 1358, 1834, 1940, 2620, 2716, 3395, 3668, 4585, 6790, 9170, 12707, 13580, 18340, 25414, 50828, 63535, 88949, 127070, 177898, 254140, 355796, 444745, 889490, 1778980]

約数ペア:

[(1, 1778980), (2, 889490), (4, 444745), (5, 355796), (7, 254140), (10, 177898), (14, 127070), (20, 88949), (28, 63535), (35, 50828), (70, 25414), (97, 18340), (131, 13580), (140, 12707), (194, 9170), (262, 6790), (388, 4585), (485, 3668), (524, 3395), (655, 2716), (679, 2620), (917, 1940), (970, 1834), (1310, 1358)]