253263335

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 359546880

約数和(自身を除く): 106283545

約数列:

[1, 5, 13, 31, 37, 43, 65, 79, 155, 185, 215, 395, 403, 481, 559, 1027, 1147, 1333, 1591, 2015, 2405, 2449, 2795, 2923, 3397, 5135, 5735, 6665, 7955, 12245, 14615, 14911, 16985, 17329, 20683, 31837, 37999, 44161, 49321, 74555, 86645, 90613, 103415, 105307, 125689, 159185, 189995, 220805, 246605, 453065, 526535, 628445, 641173, 1177969, 1368991, 1633957, 3205865, 3896359, 5889845, 6844955, 8169785, 19481795, 50652667, 253263335]

約数ペア:

[(1, 253263335), (5, 50652667), (13, 19481795), (31, 8169785), (37, 6844955), (43, 5889845), (65, 3896359), (79, 3205865), (155, 1633957), (185, 1368991), (215, 1177969), (395, 641173), (403, 628445), (481, 526535), (559, 453065), (1027, 246605), (1147, 220805), (1333, 189995), (1591, 159185), (2015, 125689), (2405, 105307), (2449, 103415), (2795, 90613), (2923, 86645), (3397, 74555), (5135, 49321), (5735, 44161), (6665, 37999), (7955, 31837), (12245, 20683), (14615, 17329), (14911, 16985)]