21334660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{479}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 26565500

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 131, 170, 262, 340, 479, 524, 655, 958, 1310, 1916, 2227, 2395, 2620, 4454, 4790, 8143, 8908, 9580, 11135, 16286, 22270, 32572, 40715, 44540, 62749, 81430, 125498, 162860, 250996, 313745, 627490, 1066733, 1254980, 2133466, 4266932, 5333665, 10667330, 21334660]

約数ペア:

[(1, 21334660), (2, 10667330), (4, 5333665), (5, 4266932), (10, 2133466), (17, 1254980), (20, 1066733), (34, 627490), (68, 313745), (85, 250996), (131, 162860), (170, 125498), (262, 81430), (340, 62749), (479, 44540), (524, 40715), (655, 32572), (958, 22270), (1310, 16286), (1916, 11135), (2227, 9580), (2395, 8908), (2620, 8143), (4454, 4790)]