640051566364

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1637}}^1\times {\mathrm{324743}}^1$

素因数の和:326434

約数の個数: 48

約数和(自身を含む): 1310677175808

約数和(自身を除く): 670625609444

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 1637, 3274, 6548, 11459, 22918, 45836, 70391, 140782, 281564, 324743, 492737, 649486, 985474, 1298972, 1970948, 2273201, 4546402, 9092804, 13963949, 27927898, 55855796, 97747643, 195495286, 390990572, 531604291, 1063208582, 2126417164, 3721230037, 7442460074, 14884920148, 22858984513, 45717969026, 91435938052, 160012891591, 320025783182, 640051566364]

約数ペア:

[(1, 640051566364), (2, 320025783182), (4, 160012891591), (7, 91435938052), (14, 45717969026), (28, 22858984513), (43, 14884920148), (86, 7442460074), (172, 3721230037), (301, 2126417164), (602, 1063208582), (1204, 531604291), (1637, 390990572), (3274, 195495286), (6548, 97747643), (11459, 55855796), (22918, 27927898), (45836, 13963949), (70391, 9092804), (140782, 4546402), (281564, 2273201), (324743, 1970948), (492737, 1298972), (649486, 985474)]