19725992

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{401}}^1$

素因数の和:474

約数の個数: 64

約数和(自身を含む): 44573760

約数和(自身を除く): 24847768

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 43, 44, 52, 86, 88, 104, 143, 172, 286, 344, 401, 473, 559, 572, 802, 946, 1118, 1144, 1604, 1892, 2236, 3208, 3784, 4411, 4472, 5213, 6149, 8822, 10426, 12298, 17243, 17644, 20852, 24596, 34486, 35288, 41704, 49192, 57343, 68972, 114686, 137944, 189673, 224159, 229372, 379346, 448318, 458744, 758692, 896636, 1517384, 1793272, 2465749, 4931498, 9862996, 19725992]

約数ペア:

[(1, 19725992), (2, 9862996), (4, 4931498), (8, 2465749), (11, 1793272), (13, 1517384), (22, 896636), (26, 758692), (43, 458744), (44, 448318), (52, 379346), (86, 229372), (88, 224159), (104, 189673), (143, 137944), (172, 114686), (286, 68972), (344, 57343), (401, 49192), (473, 41704), (559, 35288), (572, 34486), (802, 24596), (946, 20852), (1118, 17644), (1144, 17243), (1604, 12298), (1892, 10426), (2236, 8822), (3208, 6149), (3784, 5213), (4411, 4472)]