28625960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:171

約数の個数: 128

約数和(自身を含む): 76982400

約数和(自身を除く): 48356440

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 43, 44, 55, 68, 85, 86, 88, 89, 110, 136, 170, 172, 178, 187, 215, 220, 340, 344, 356, 374, 430, 440, 445, 473, 680, 712, 731, 748, 860, 890, 935, 946, 979, 1462, 1496, 1513, 1720, 1780, 1870, 1892, 1958, 2365, 2924, 3026, 3560, 3655, 3740, 3784, 3827, 3916, 4730, 4895, 5848, 6052, 7310, 7480, 7565, 7654, 7832, 8041, 9460, 9790, 12104, 14620, 15130, 15308, 16082, 16643, 18920, 19135, 19580, 29240, 30260, 30616, 32164, 33286, 38270, 39160, 40205, 42097, 60520, 64328, 65059, 66572, 76540, 80410, 83215, 84194, 130118, 133144, 153080, 160820, 166430, 168388, 210485, 260236, 321640, 325295, 332860, 336776, 420970, 520472, 650590, 665720, 715649, 841940, 1301180, 1431298, 1683880, 2602360, 2862596, 3578245, 5725192, 7156490, 14312980, 28625960]

約数ペア:

[(1, 28625960), (2, 14312980), (4, 7156490), (5, 5725192), (8, 3578245), (10, 2862596), (11, 2602360), (17, 1683880), (20, 1431298), (22, 1301180), (34, 841940), (40, 715649), (43, 665720), (44, 650590), (55, 520472), (68, 420970), (85, 336776), (86, 332860), (88, 325295), (89, 321640), (110, 260236), (136, 210485), (170, 168388), (172, 166430), (178, 160820), (187, 153080), (215, 133144), (220, 130118), (340, 84194), (344, 83215), (356, 80410), (374, 76540), (430, 66572), (440, 65059), (445, 64328), (473, 60520), (680, 42097), (712, 40205), (731, 39160), (748, 38270), (860, 33286), (890, 32164), (935, 30616), (946, 30260), (979, 29240), (1462, 19580), (1496, 19135), (1513, 18920), (1720, 16643), (1780, 16082), (1870, 15308), (1892, 15130), (1958, 14620), (2365, 12104), (2924, 9790), (3026, 9460), (3560, 8041), (3655, 7832), (3740, 7654), (3784, 7565), (3827, 7480), (3916, 7310), (4730, 6052), (4895, 5848)]