1991569161580

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{39679}}^1\times {\mathrm{41141}}^1$

素因数の和:80890

約数の個数: 48

約数和(自身を含む): 4251067914240

約数和(自身を除く): 2259498752660

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 39679, 41141, 79358, 82282, 158716, 164564, 198395, 205705, 396790, 411410, 793580, 822820, 2420419, 2509601, 4840838, 5019202, 9681676, 10038404, 12102095, 12548005, 24204190, 25096010, 48408380, 50192020, 1632433739, 3264867478, 6529734956, 8162168695, 16324337390, 32648674780, 99578458079, 199156916158, 398313832316, 497892290395, 995784580790, 1991569161580]

約数ペア:

[(1, 1991569161580), (2, 995784580790), (4, 497892290395), (5, 398313832316), (10, 199156916158), (20, 99578458079), (61, 32648674780), (122, 16324337390), (244, 8162168695), (305, 6529734956), (610, 3264867478), (1220, 1632433739), (39679, 50192020), (41141, 48408380), (79358, 25096010), (82282, 24204190), (158716, 12548005), (164564, 12102095), (198395, 10038404), (205705, 9681676), (396790, 5019202), (411410, 4840838), (793580, 2509601), (822820, 2420419)]