1277326520

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{659}}^1\times {\mathrm{1031}}^1$

素因数の和:1748

約数の個数: 64

約数和(自身を含む): 2942438400

約数和(自身を除く): 1665111880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 659, 940, 1031, 1318, 1880, 2062, 2636, 3295, 4124, 5155, 5272, 6590, 8248, 10310, 13180, 20620, 26360, 30973, 41240, 48457, 61946, 96914, 123892, 154865, 193828, 242285, 247784, 309730, 387656, 484570, 619460, 679429, 969140, 1238920, 1358858, 1938280, 2717716, 3397145, 5435432, 6794290, 13588580, 27177160, 31933163, 63866326, 127732652, 159665815, 255465304, 319331630, 638663260, 1277326520]

約数ペア:

[(1, 1277326520), (2, 638663260), (4, 319331630), (5, 255465304), (8, 159665815), (10, 127732652), (20, 63866326), (40, 31933163), (47, 27177160), (94, 13588580), (188, 6794290), (235, 5435432), (376, 3397145), (470, 2717716), (659, 1938280), (940, 1358858), (1031, 1238920), (1318, 969140), (1880, 679429), (2062, 619460), (2636, 484570), (3295, 387656), (4124, 309730), (5155, 247784), (5272, 242285), (6590, 193828), (8248, 154865), (10310, 123892), (13180, 96914), (20620, 61946), (26360, 48457), (30973, 41240)]