19604740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{109}}^1$

素因数の和:181

約数の個数: 72

約数和(自身を含む): 45987480

約数和(自身を除く): 26382740

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 109, 115, 170, 218, 230, 340, 391, 436, 460, 529, 545, 782, 1058, 1090, 1564, 1853, 1955, 2116, 2180, 2507, 2645, 3706, 3910, 5014, 5290, 7412, 7820, 8993, 9265, 10028, 10580, 12535, 17986, 18530, 25070, 35972, 37060, 42619, 44965, 50140, 57661, 85238, 89930, 115322, 170476, 179860, 213095, 230644, 288305, 426190, 576610, 852380, 980237, 1153220, 1960474, 3920948, 4901185, 9802370, 19604740]

約数ペア:

[(1, 19604740), (2, 9802370), (4, 4901185), (5, 3920948), (10, 1960474), (17, 1153220), (20, 980237), (23, 852380), (34, 576610), (46, 426190), (68, 288305), (85, 230644), (92, 213095), (109, 179860), (115, 170476), (170, 115322), (218, 89930), (230, 85238), (340, 57661), (391, 50140), (436, 44965), (460, 42619), (529, 37060), (545, 35972), (782, 25070), (1058, 18530), (1090, 17986), (1564, 12535), (1853, 10580), (1955, 10028), (2116, 9265), (2180, 8993), (2507, 7820), (2645, 7412), (3706, 5290), (3910, 5014)]