165440420

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{331}}^1\times {\mathrm{373}}^1$

素因数の和:780

約数の個数: 48

約数和(自身を含む): 354623808

約数和(自身を除く): 189183388

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 331, 335, 373, 662, 670, 746, 1324, 1340, 1492, 1655, 1865, 3310, 3730, 6620, 7460, 22177, 24991, 44354, 49982, 88708, 99964, 110885, 123463, 124955, 221770, 246926, 249910, 443540, 493852, 499820, 617315, 1234630, 2469260, 8272021, 16544042, 33088084, 41360105, 82720210, 165440420]

約数ペア:

[(1, 165440420), (2, 82720210), (4, 41360105), (5, 33088084), (10, 16544042), (20, 8272021), (67, 2469260), (134, 1234630), (268, 617315), (331, 499820), (335, 493852), (373, 443540), (662, 249910), (670, 246926), (746, 221770), (1324, 124955), (1340, 123463), (1492, 110885), (1655, 99964), (1865, 88708), (3310, 49982), (3730, 44354), (6620, 24991), (7460, 22177)]