28272020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1697}}^1$

素因数の和:1737

約数の個数: 72

約数和(自身を含む): 73170216

約数和(自身を除く): 44898196

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, 1697, 2380, 3332, 3394, 4165, 6788, 8330, 8485, 11879, 16660, 16970, 23758, 28849, 33940, 47516, 57698, 59395, 83153, 115396, 118790, 144245, 166306, 201943, 237580, 288490, 332612, 403886, 415765, 576980, 807772, 831530, 1009715, 1413601, 1663060, 2019430, 2827202, 4038860, 5654404, 7068005, 14136010, 28272020]

約数ペア:

[(1, 28272020), (2, 14136010), (4, 7068005), (5, 5654404), (7, 4038860), (10, 2827202), (14, 2019430), (17, 1663060), (20, 1413601), (28, 1009715), (34, 831530), (35, 807772), (49, 576980), (68, 415765), (70, 403886), (85, 332612), (98, 288490), (119, 237580), (140, 201943), (170, 166306), (196, 144245), (238, 118790), (245, 115396), (340, 83153), (476, 59395), (490, 57698), (595, 47516), (833, 33940), (980, 28849), (1190, 23758), (1666, 16970), (1697, 16660), (2380, 11879), (3332, 8485), (3394, 8330), (4165, 6788)]