808260280

素因数分解:

$2^3\times 5^1\times {\mathrm{1951}}^1\times {\mathrm{10357}}^1$

素因数の和:12319

約数の個数: 32

約数和(自身を含む): 1819693440

約数和(自身を除く): 1011433160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1951, 3902, 7804, 9755, 10357, 15608, 19510, 20714, 39020, 41428, 51785, 78040, 82856, 103570, 207140, 414280, 20206507, 40413014, 80826028, 101032535, 161652056, 202065070, 404130140, 808260280]

約数ペア:

[(1, 808260280), (2, 404130140), (4, 202065070), (5, 161652056), (8, 101032535), (10, 80826028), (20, 40413014), (40, 20206507), (1951, 414280), (3902, 207140), (7804, 103570), (9755, 82856), (10357, 78040), (15608, 51785), (19510, 41428), (20714, 39020)]