18990958895

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1\times {\mathrm{7757}}^1$

素因数の和:8195

約数の個数: 32

約数和(自身を含む): 24242198400

約数和(自身を除く): 5251239505

約数列:

[1, 5, 23, 61, 115, 305, 349, 1403, 1745, 7015, 7757, 8027, 21289, 38785, 40135, 106445, 178411, 473177, 489647, 892055, 2365885, 2448235, 2707193, 10883071, 13535965, 54415355, 62265439, 165138773, 311327195, 825693865, 3798191779, 18990958895]

約数ペア:

[(1, 18990958895), (5, 3798191779), (23, 825693865), (61, 311327195), (115, 165138773), (305, 62265439), (349, 54415355), (1403, 13535965), (1745, 10883071), (7015, 2707193), (7757, 2448235), (8027, 2365885), (21289, 892055), (38785, 489647), (40135, 473177), (106445, 178411)]