19538178

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:311

約数の個数: 64

約数和(自身を含む): 45425664

約数和(自身を除く): 25887486

約数列:

[1, 2, 3, 6, 11, 22, 23, 33, 46, 61, 66, 69, 122, 138, 183, 211, 253, 366, 422, 506, 633, 671, 759, 1266, 1342, 1403, 1518, 2013, 2321, 2806, 4026, 4209, 4642, 4853, 6963, 8418, 9706, 12871, 13926, 14559, 15433, 25742, 29118, 30866, 38613, 46299, 53383, 77226, 92598, 106766, 141581, 160149, 283162, 296033, 320298, 424743, 592066, 849486, 888099, 1776198, 3256363, 6512726, 9769089, 19538178]

約数ペア:

[(1, 19538178), (2, 9769089), (3, 6512726), (6, 3256363), (11, 1776198), (22, 888099), (23, 849486), (33, 592066), (46, 424743), (61, 320298), (66, 296033), (69, 283162), (122, 160149), (138, 141581), (183, 106766), (211, 92598), (253, 77226), (366, 53383), (422, 46299), (506, 38613), (633, 30866), (671, 29118), (759, 25742), (1266, 15433), (1342, 14559), (1403, 13926), (1518, 12871), (2013, 9706), (2321, 8418), (2806, 6963), (4026, 4853), (4209, 4642)]