28742140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{859}}^1$

素因数の和:1114

約数の個数: 48

約数和(自身を含む): 69350400

約数和(自身を除く): 40608260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 478, 859, 956, 1195, 1673, 1718, 2390, 3346, 3436, 4295, 4780, 6013, 6692, 8365, 8590, 12026, 16730, 17180, 24052, 30065, 33460, 60130, 120260, 205301, 410602, 821204, 1026505, 1437107, 2053010, 2874214, 4106020, 5748428, 7185535, 14371070, 28742140]

約数ペア:

[(1, 28742140), (2, 14371070), (4, 7185535), (5, 5748428), (7, 4106020), (10, 2874214), (14, 2053010), (20, 1437107), (28, 1026505), (35, 821204), (70, 410602), (140, 205301), (239, 120260), (478, 60130), (859, 33460), (956, 30065), (1195, 24052), (1673, 17180), (1718, 16730), (2390, 12026), (3346, 8590), (3436, 8365), (4295, 6692), (4780, 6013)]