87170020

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:258

約数の個数: 96

約数和(自身を含む): 217324800

約数和(自身を除く): 130154780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 97, 98, 131, 140, 194, 196, 245, 262, 343, 388, 485, 490, 524, 655, 679, 686, 917, 970, 980, 1310, 1358, 1372, 1715, 1834, 1940, 2620, 2716, 3395, 3430, 3668, 4585, 4753, 6419, 6790, 6860, 9170, 9506, 12707, 12838, 13580, 18340, 19012, 23765, 25414, 25676, 32095, 33271, 44933, 47530, 50828, 63535, 64190, 66542, 88949, 89866, 95060, 127070, 128380, 133084, 166355, 177898, 179732, 224665, 254140, 332710, 355796, 444745, 449330, 622643, 665420, 889490, 898660, 1245286, 1778980, 2490572, 3113215, 4358501, 6226430, 8717002, 12452860, 17434004, 21792505, 43585010, 87170020]

約数ペア:

[(1, 87170020), (2, 43585010), (4, 21792505), (5, 17434004), (7, 12452860), (10, 8717002), (14, 6226430), (20, 4358501), (28, 3113215), (35, 2490572), (49, 1778980), (70, 1245286), (97, 898660), (98, 889490), (131, 665420), (140, 622643), (194, 449330), (196, 444745), (245, 355796), (262, 332710), (343, 254140), (388, 224665), (485, 179732), (490, 177898), (524, 166355), (655, 133084), (679, 128380), (686, 127070), (917, 95060), (970, 89866), (980, 88949), (1310, 66542), (1358, 64190), (1372, 63535), (1715, 50828), (1834, 47530), (1940, 44933), (2620, 33271), (2716, 32095), (3395, 25676), (3430, 25414), (3668, 23765), (4585, 19012), (4753, 18340), (6419, 13580), (6790, 12838), (6860, 12707), (9170, 9506)]