28252420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{227}}^1$

素因数の和:377

約数の個数: 72

約数和(自身を含む): 69866496

約数和(自身を除く): 41614076

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 127, 140, 196, 227, 245, 254, 454, 490, 508, 635, 889, 908, 980, 1135, 1270, 1589, 1778, 2270, 2540, 3178, 3556, 4445, 4540, 6223, 6356, 7945, 8890, 11123, 12446, 15890, 17780, 22246, 24892, 28829, 31115, 31780, 44492, 55615, 57658, 62230, 111230, 115316, 124460, 144145, 201803, 222460, 288290, 403606, 576580, 807212, 1009015, 1412621, 2018030, 2825242, 4036060, 5650484, 7063105, 14126210, 28252420]

約数ペア:

[(1, 28252420), (2, 14126210), (4, 7063105), (5, 5650484), (7, 4036060), (10, 2825242), (14, 2018030), (20, 1412621), (28, 1009015), (35, 807212), (49, 576580), (70, 403606), (98, 288290), (127, 222460), (140, 201803), (196, 144145), (227, 124460), (245, 115316), (254, 111230), (454, 62230), (490, 57658), (508, 55615), (635, 44492), (889, 31780), (908, 31115), (980, 28829), (1135, 24892), (1270, 22246), (1589, 17780), (1778, 15890), (2270, 12446), (2540, 11123), (3178, 8890), (3556, 7945), (4445, 6356), (4540, 6223)]