20145123920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{953}}^1\times {\mathrm{13907}}^1$

素因数の和:14892

約数の個数: 80

約数和(自身を含む): 49357823040

約数和(自身を除く): 29212699120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 953, 1520, 1906, 3812, 4765, 7624, 9530, 13907, 15248, 18107, 19060, 27814, 36214, 38120, 55628, 69535, 72428, 76240, 90535, 111256, 139070, 144856, 181070, 222512, 264233, 278140, 289712, 362140, 528466, 556280, 724280, 1056932, 1112560, 1321165, 1448560, 2113864, 2642330, 4227728, 5284660, 10569320, 13253371, 21138640, 26506742, 53013484, 66266855, 106026968, 132533710, 212053936, 251814049, 265067420, 503628098, 530134840, 1007256196, 1060269680, 1259070245, 2014512392, 2518140490, 4029024784, 5036280980, 10072561960, 20145123920]

約数ペア:

[(1, 20145123920), (2, 10072561960), (4, 5036280980), (5, 4029024784), (8, 2518140490), (10, 2014512392), (16, 1259070245), (19, 1060269680), (20, 1007256196), (38, 530134840), (40, 503628098), (76, 265067420), (80, 251814049), (95, 212053936), (152, 132533710), (190, 106026968), (304, 66266855), (380, 53013484), (760, 26506742), (953, 21138640), (1520, 13253371), (1906, 10569320), (3812, 5284660), (4765, 4227728), (7624, 2642330), (9530, 2113864), (13907, 1448560), (15248, 1321165), (18107, 1112560), (19060, 1056932), (27814, 724280), (36214, 556280), (38120, 528466), (55628, 362140), (69535, 289712), (72428, 278140), (76240, 264233), (90535, 222512), (111256, 181070), (139070, 144856)]