211030280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{128677}}^1$

素因数の和:128729

約数の個数: 32

約数和(自身を含む): 486402840

約数和(自身を除く): 275372560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 128677, 257354, 514708, 643385, 1029416, 1286770, 2573540, 5147080, 5275757, 10551514, 21103028, 26378785, 42206056, 52757570, 105515140, 211030280]

約数ペア:

[(1, 211030280), (2, 105515140), (4, 52757570), (5, 42206056), (8, 26378785), (10, 21103028), (20, 10551514), (40, 5275757), (41, 5147080), (82, 2573540), (164, 1286770), (205, 1029416), (328, 643385), (410, 514708), (820, 257354), (1640, 128677)]