19811279358

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4980211}}^1$

素因数の和:4980249

約数の個数: 48

約数和(自身を含む): 48945523536

約数和(自身を除く): 29134244178

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 221, 234, 306, 442, 663, 1326, 1989, 3978, 4980211, 9960422, 14940633, 29881266, 44821899, 64742743, 84663587, 89643798, 129485486, 169327174, 194228229, 253990761, 388456458, 507981522, 582684687, 761972283, 1100626631, 1165369374, 1523944566, 2201253262, 3301879893, 6603759786, 9905639679, 19811279358]

約数ペア:

[(1, 19811279358), (2, 9905639679), (3, 6603759786), (6, 3301879893), (9, 2201253262), (13, 1523944566), (17, 1165369374), (18, 1100626631), (26, 761972283), (34, 582684687), (39, 507981522), (51, 388456458), (78, 253990761), (102, 194228229), (117, 169327174), (153, 129485486), (221, 89643798), (234, 84663587), (306, 64742743), (442, 44821899), (663, 29881266), (1326, 14940633), (1989, 9960422), (3978, 4980211)]