257465096

素因数分解:

$2^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{223}}^1\times {\mathrm{389}}^1$

素因数の和:678

約数の個数: 64

約数和(自身を含む): 566092800

約数和(自身を除く): 308627704

約数列:

[1, 2, 4, 7, 8, 14, 28, 53, 56, 106, 212, 223, 371, 389, 424, 446, 742, 778, 892, 1484, 1556, 1561, 1784, 2723, 2968, 3112, 3122, 5446, 6244, 10892, 11819, 12488, 20617, 21784, 23638, 41234, 47276, 82468, 82733, 86747, 94552, 144319, 164936, 165466, 173494, 288638, 330932, 346988, 577276, 607229, 661864, 693976, 1154552, 1214458, 2428916, 4597591, 4857832, 9195182, 18390364, 32183137, 36780728, 64366274, 128732548, 257465096]

約数ペア:

[(1, 257465096), (2, 128732548), (4, 64366274), (7, 36780728), (8, 32183137), (14, 18390364), (28, 9195182), (53, 4857832), (56, 4597591), (106, 2428916), (212, 1214458), (223, 1154552), (371, 693976), (389, 661864), (424, 607229), (446, 577276), (742, 346988), (778, 330932), (892, 288638), (1484, 173494), (1556, 165466), (1561, 164936), (1784, 144319), (2723, 94552), (2968, 86747), (3112, 82733), (3122, 82468), (5446, 47276), (6244, 41234), (10892, 23638), (11819, 21784), (12488, 20617)]