257482420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{563}}^1\times {\mathrm{1759}}^1$

素因数の和:2344

約数の個数: 48

約数和(自身を含む): 583672320

約数和(自身を除く): 326189900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 563, 1126, 1759, 2252, 2815, 3518, 5630, 7036, 7319, 8795, 11260, 14638, 17590, 22867, 29276, 35180, 36595, 45734, 73190, 91468, 114335, 146380, 228670, 457340, 990317, 1980634, 3961268, 4951585, 9903170, 12874121, 19806340, 25748242, 51496484, 64370605, 128741210, 257482420]

約数ペア:

[(1, 257482420), (2, 128741210), (4, 64370605), (5, 51496484), (10, 25748242), (13, 19806340), (20, 12874121), (26, 9903170), (52, 4951585), (65, 3961268), (130, 1980634), (260, 990317), (563, 457340), (1126, 228670), (1759, 146380), (2252, 114335), (2815, 91468), (3518, 73190), (5630, 45734), (7036, 36595), (7319, 35180), (8795, 29276), (11260, 22867), (14638, 17590)]