18677985

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{823}}^1$

素因数の和:937

約数の個数: 32

約数和(自身を含む): 32037120

約数和(自身を除く): 13359135

約数列:

[1, 3, 5, 15, 17, 51, 85, 89, 255, 267, 445, 823, 1335, 1513, 2469, 4115, 4539, 7565, 12345, 13991, 22695, 41973, 69955, 73247, 209865, 219741, 366235, 1098705, 1245199, 3735597, 6225995, 18677985]

約数ペア:

[(1, 18677985), (3, 6225995), (5, 3735597), (15, 1245199), (17, 1098705), (51, 366235), (85, 219741), (89, 209865), (255, 73247), (267, 69955), (445, 41973), (823, 22695), (1335, 13991), (1513, 12345), (2469, 7565), (4115, 4539)]