19990806537

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{311981}}^1$

素因数の和:312081

約数の個数: 32

約数和(自身を含む): 30189874176

約数和(自身を除く): 10199067639

約数列:

[1, 3, 13, 31, 39, 53, 93, 159, 403, 689, 1209, 1643, 2067, 4929, 21359, 64077, 311981, 935943, 4055753, 9671411, 12167259, 16534993, 29014233, 49604979, 125728343, 214954909, 377185029, 512584783, 644864727, 1537754349, 6663602179, 19990806537]

約数ペア:

[(1, 19990806537), (3, 6663602179), (13, 1537754349), (31, 644864727), (39, 512584783), (53, 377185029), (93, 214954909), (159, 125728343), (403, 49604979), (689, 29014233), (1209, 16534993), (1643, 12167259), (2067, 9671411), (4929, 4055753), (21359, 935943), (64077, 311981)]