81150860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{4871}}^1$

素因数の和:4911

約数の個数: 72

約数和(自身を含む): 209944224

約数和(自身を除く): 128793364

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 85, 98, 119, 140, 170, 196, 238, 245, 340, 476, 490, 595, 833, 980, 1190, 1666, 2380, 3332, 4165, 4871, 8330, 9742, 16660, 19484, 24355, 34097, 48710, 68194, 82807, 97420, 136388, 165614, 170485, 238679, 331228, 340970, 414035, 477358, 579649, 681940, 828070, 954716, 1159298, 1193395, 1656140, 2318596, 2386790, 2898245, 4057543, 4773580, 5796490, 8115086, 11592980, 16230172, 20287715, 40575430, 81150860]

約数ペア:

[(1, 81150860), (2, 40575430), (4, 20287715), (5, 16230172), (7, 11592980), (10, 8115086), (14, 5796490), (17, 4773580), (20, 4057543), (28, 2898245), (34, 2386790), (35, 2318596), (49, 1656140), (68, 1193395), (70, 1159298), (85, 954716), (98, 828070), (119, 681940), (140, 579649), (170, 477358), (196, 414035), (238, 340970), (245, 331228), (340, 238679), (476, 170485), (490, 165614), (595, 136388), (833, 97420), (980, 82807), (1190, 68194), (1666, 48710), (2380, 34097), (3332, 24355), (4165, 19484), (4871, 16660), (8330, 9742)]