20019428

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1129}}^1$

素因数の和:1188

約数の個数: 48

約数和(自身を含む): 42524160

約数和(自身を除く): 22504732

約数列:

[1, 2, 4, 11, 13, 22, 26, 31, 44, 52, 62, 124, 143, 286, 341, 403, 572, 682, 806, 1129, 1364, 1612, 2258, 4433, 4516, 8866, 12419, 14677, 17732, 24838, 29354, 34999, 49676, 58708, 69998, 139996, 161447, 322894, 384989, 454987, 645788, 769978, 909974, 1539956, 1819948, 5004857, 10009714, 20019428]

約数ペア:

[(1, 20019428), (2, 10009714), (4, 5004857), (11, 1819948), (13, 1539956), (22, 909974), (26, 769978), (31, 645788), (44, 454987), (52, 384989), (62, 322894), (124, 161447), (143, 139996), (286, 69998), (341, 58708), (403, 49676), (572, 34999), (682, 29354), (806, 24838), (1129, 17732), (1364, 14677), (1612, 12419), (2258, 8866), (4433, 4516)]