256713380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1873}}^1$

素因数の和:1989

約数の個数: 96

約数和(自身を含む): 680037120

約数和(自身を除く): 423323740

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 89, 110, 140, 154, 178, 220, 308, 356, 385, 445, 623, 770, 890, 979, 1246, 1540, 1780, 1873, 1958, 2492, 3115, 3746, 3916, 4895, 6230, 6853, 7492, 9365, 9790, 12460, 13111, 13706, 18730, 19580, 20603, 26222, 27412, 34265, 37460, 41206, 52444, 65555, 68530, 82412, 103015, 131110, 137060, 144221, 166697, 206030, 262220, 288442, 333394, 412060, 576884, 666788, 721105, 833485, 1166879, 1442210, 1666970, 1833667, 2333758, 2884420, 3333940, 3667334, 4667516, 5834395, 7334668, 9168335, 11668790, 12835669, 18336670, 23337580, 25671338, 36673340, 51342676, 64178345, 128356690, 256713380]

約数ペア:

[(1, 256713380), (2, 128356690), (4, 64178345), (5, 51342676), (7, 36673340), (10, 25671338), (11, 23337580), (14, 18336670), (20, 12835669), (22, 11668790), (28, 9168335), (35, 7334668), (44, 5834395), (55, 4667516), (70, 3667334), (77, 3333940), (89, 2884420), (110, 2333758), (140, 1833667), (154, 1666970), (178, 1442210), (220, 1166879), (308, 833485), (356, 721105), (385, 666788), (445, 576884), (623, 412060), (770, 333394), (890, 288442), (979, 262220), (1246, 206030), (1540, 166697), (1780, 144221), (1873, 137060), (1958, 131110), (2492, 103015), (3115, 82412), (3746, 68530), (3916, 65555), (4895, 52444), (6230, 41206), (6853, 37460), (7492, 34265), (9365, 27412), (9790, 26222), (12460, 20603), (13111, 19580), (13706, 18730)]