81656440

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{227}}^1$

素因数の和:301

約数の個数: 96

約数和(自身を含む): 204256080

約数和(自身を除く): 122599640

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 34, 40, 46, 68, 85, 92, 115, 136, 170, 184, 227, 230, 340, 391, 454, 460, 529, 680, 782, 908, 920, 1058, 1135, 1564, 1816, 1955, 2116, 2270, 2645, 3128, 3859, 3910, 4232, 4540, 5221, 5290, 7718, 7820, 8993, 9080, 10442, 10580, 15436, 15640, 17986, 19295, 20884, 21160, 26105, 30872, 35972, 38590, 41768, 44965, 52210, 71944, 77180, 88757, 89930, 104420, 120083, 154360, 177514, 179860, 208840, 240166, 355028, 359720, 443785, 480332, 600415, 710056, 887570, 960664, 1200830, 1775140, 2041411, 2401660, 3550280, 4082822, 4803320, 8165644, 10207055, 16331288, 20414110, 40828220, 81656440]

約数ペア:

[(1, 81656440), (2, 40828220), (4, 20414110), (5, 16331288), (8, 10207055), (10, 8165644), (17, 4803320), (20, 4082822), (23, 3550280), (34, 2401660), (40, 2041411), (46, 1775140), (68, 1200830), (85, 960664), (92, 887570), (115, 710056), (136, 600415), (170, 480332), (184, 443785), (227, 359720), (230, 355028), (340, 240166), (391, 208840), (454, 179860), (460, 177514), (529, 154360), (680, 120083), (782, 104420), (908, 89930), (920, 88757), (1058, 77180), (1135, 71944), (1564, 52210), (1816, 44965), (1955, 41768), (2116, 38590), (2270, 35972), (2645, 30872), (3128, 26105), (3859, 21160), (3910, 20884), (4232, 19295), (4540, 17986), (5221, 15640), (5290, 15436), (7718, 10580), (7820, 10442), (8993, 9080)]