251189680

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{461}}^1$

素因数の和:627

約数の個数: 120

約数和(自身を含む): 685737360

約数和(自身を除く): 434547680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 139, 140, 196, 245, 278, 280, 392, 461, 490, 556, 560, 695, 784, 922, 973, 980, 1112, 1390, 1844, 1946, 1960, 2224, 2305, 2780, 3227, 3688, 3892, 3920, 4610, 4865, 5560, 6454, 6811, 7376, 7784, 9220, 9730, 11120, 12908, 13622, 15568, 16135, 18440, 19460, 22589, 25816, 27244, 32270, 34055, 36880, 38920, 45178, 51632, 54488, 64079, 64540, 68110, 77840, 90356, 108976, 112945, 128158, 129080, 136220, 180712, 225890, 256316, 258160, 272440, 320395, 361424, 448553, 451780, 512632, 544880, 640790, 897106, 903560, 1025264, 1281580, 1794212, 1807120, 2242765, 2563160, 3139871, 3588424, 4485530, 5126320, 6279742, 7176848, 8971060, 12559484, 15699355, 17942120, 25118968, 31398710, 35884240, 50237936, 62797420, 125594840, 251189680]

約数ペア:

[(1, 251189680), (2, 125594840), (4, 62797420), (5, 50237936), (7, 35884240), (8, 31398710), (10, 25118968), (14, 17942120), (16, 15699355), (20, 12559484), (28, 8971060), (35, 7176848), (40, 6279742), (49, 5126320), (56, 4485530), (70, 3588424), (80, 3139871), (98, 2563160), (112, 2242765), (139, 1807120), (140, 1794212), (196, 1281580), (245, 1025264), (278, 903560), (280, 897106), (392, 640790), (461, 544880), (490, 512632), (556, 451780), (560, 448553), (695, 361424), (784, 320395), (922, 272440), (973, 258160), (980, 256316), (1112, 225890), (1390, 180712), (1844, 136220), (1946, 129080), (1960, 128158), (2224, 112945), (2305, 108976), (2780, 90356), (3227, 77840), (3688, 68110), (3892, 64540), (3920, 64079), (4610, 54488), (4865, 51632), (5560, 45178), (6454, 38920), (6811, 36880), (7376, 34055), (7784, 32270), (9220, 27244), (9730, 25816), (11120, 22589), (12908, 19460), (13622, 18440), (15568, 16135)]