19681444

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 38320128

約数和(自身を除く): 18638684

約数列:

[1, 2, 4, 17, 34, 43, 53, 68, 86, 106, 127, 172, 212, 254, 508, 731, 901, 1462, 1802, 2159, 2279, 2924, 3604, 4318, 4558, 5461, 6731, 8636, 9116, 10922, 13462, 21844, 26924, 38743, 77486, 92837, 114427, 154972, 185674, 228854, 289433, 371348, 457708, 578866, 1157732, 4920361, 9840722, 19681444]

約数ペア:

[(1, 19681444), (2, 9840722), (4, 4920361), (17, 1157732), (34, 578866), (43, 457708), (53, 371348), (68, 289433), (86, 228854), (106, 185674), (127, 154972), (172, 114427), (212, 92837), (254, 77486), (508, 38743), (731, 26924), (901, 21844), (1462, 13462), (1802, 10922), (2159, 9116), (2279, 8636), (2924, 6731), (3604, 5461), (4318, 4558)]