84707780

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{509}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 182755440

約数和(自身を除く): 98047660

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 157, 212, 265, 314, 509, 530, 628, 785, 1018, 1060, 1570, 2036, 2545, 3140, 5090, 8321, 10180, 16642, 26977, 33284, 41605, 53954, 79913, 83210, 107908, 134885, 159826, 166420, 269770, 319652, 399565, 539540, 799130, 1598260, 4235389, 8470778, 16941556, 21176945, 42353890, 84707780]

約数ペア:

[(1, 84707780), (2, 42353890), (4, 21176945), (5, 16941556), (10, 8470778), (20, 4235389), (53, 1598260), (106, 799130), (157, 539540), (212, 399565), (265, 319652), (314, 269770), (509, 166420), (530, 159826), (628, 134885), (785, 107908), (1018, 83210), (1060, 79913), (1570, 53954), (2036, 41605), (2545, 33284), (3140, 26977), (5090, 16642), (8321, 10180)]