19988124

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{7537}}^1$

素因数の和:7574

約数の個数: 48

約数和(自身を含む): 53188128

約数和(自身を除く): 33200004

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 26, 34, 39, 51, 52, 68, 78, 102, 156, 204, 221, 442, 663, 884, 1326, 2652, 7537, 15074, 22611, 30148, 45222, 90444, 97981, 128129, 195962, 256258, 293943, 384387, 391924, 512516, 587886, 768774, 1175772, 1537548, 1665677, 3331354, 4997031, 6662708, 9994062, 19988124]

約数ペア:

[(1, 19988124), (2, 9994062), (3, 6662708), (4, 4997031), (6, 3331354), (12, 1665677), (13, 1537548), (17, 1175772), (26, 768774), (34, 587886), (39, 512516), (51, 391924), (52, 384387), (68, 293943), (78, 256258), (102, 195962), (156, 128129), (204, 97981), (221, 90444), (442, 45222), (663, 30148), (884, 22611), (1326, 15074), (2652, 7537)]