17939140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{167}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 39118464

約数和(自身を除く): 21179324

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 131, 164, 167, 205, 262, 334, 410, 524, 655, 668, 820, 835, 1310, 1670, 2620, 3340, 5371, 6847, 10742, 13694, 21484, 21877, 26855, 27388, 34235, 43754, 53710, 68470, 87508, 107420, 109385, 136940, 218770, 437540, 896957, 1793914, 3587828, 4484785, 8969570, 17939140]

約数ペア:

[(1, 17939140), (2, 8969570), (4, 4484785), (5, 3587828), (10, 1793914), (20, 896957), (41, 437540), (82, 218770), (131, 136940), (164, 109385), (167, 107420), (205, 87508), (262, 68470), (334, 53710), (410, 43754), (524, 34235), (655, 27388), (668, 26855), (820, 21877), (835, 21484), (1310, 13694), (1670, 10742), (2620, 6847), (3340, 5371)]