19949908

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{179}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 40824000

約数和(自身を除く): 20874092

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 149, 179, 187, 298, 358, 374, 596, 716, 748, 1639, 1969, 2533, 3043, 3278, 3938, 5066, 6086, 6556, 7876, 10132, 12172, 26671, 27863, 33473, 53342, 55726, 66946, 106684, 111452, 133892, 293381, 453407, 586762, 906814, 1173524, 1813628, 4987477, 9974954, 19949908]

約数ペア:

[(1, 19949908), (2, 9974954), (4, 4987477), (11, 1813628), (17, 1173524), (22, 906814), (34, 586762), (44, 453407), (68, 293381), (149, 133892), (179, 111452), (187, 106684), (298, 66946), (358, 55726), (374, 53342), (596, 33473), (716, 27863), (748, 26671), (1639, 12172), (1969, 10132), (2533, 7876), (3043, 6556), (3278, 6086), (3938, 5066)]