28291760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2659}}^1$

素因数の和:2698

約数の個数: 80

約数和(自身を含む): 79161600

約数和(自身を除く): 50869840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 304, 380, 532, 560, 665, 760, 1064, 1330, 1520, 2128, 2659, 2660, 5318, 5320, 10636, 10640, 13295, 18613, 21272, 26590, 37226, 42544, 50521, 53180, 74452, 93065, 101042, 106360, 148904, 186130, 202084, 212720, 252605, 297808, 353647, 372260, 404168, 505210, 707294, 744520, 808336, 1010420, 1414588, 1489040, 1768235, 2020840, 2829176, 3536470, 4041680, 5658352, 7072940, 14145880, 28291760]

約数ペア:

[(1, 28291760), (2, 14145880), (4, 7072940), (5, 5658352), (7, 4041680), (8, 3536470), (10, 2829176), (14, 2020840), (16, 1768235), (19, 1489040), (20, 1414588), (28, 1010420), (35, 808336), (38, 744520), (40, 707294), (56, 505210), (70, 404168), (76, 372260), (80, 353647), (95, 297808), (112, 252605), (133, 212720), (140, 202084), (152, 186130), (190, 148904), (266, 106360), (280, 101042), (304, 93065), (380, 74452), (532, 53180), (560, 50521), (665, 42544), (760, 37226), (1064, 26590), (1330, 21272), (1520, 18613), (2128, 13295), (2659, 10640), (2660, 10636), (5318, 5320)]