19610128

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{257}}^1$

素因数の和:535

約数の個数: 40

約数和(自身を含む): 40309920

約数和(自身を除く): 20699792

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 251, 257, 304, 502, 514, 1004, 1028, 2008, 2056, 4016, 4112, 4769, 4883, 9538, 9766, 19076, 19532, 38152, 39064, 64507, 76304, 78128, 129014, 258028, 516056, 1032112, 1225633, 2451266, 4902532, 9805064, 19610128]

約数ペア:

[(1, 19610128), (2, 9805064), (4, 4902532), (8, 2451266), (16, 1225633), (19, 1032112), (38, 516056), (76, 258028), (152, 129014), (251, 78128), (257, 76304), (304, 64507), (502, 39064), (514, 38152), (1004, 19532), (1028, 19076), (2008, 9766), (2056, 9538), (4016, 4883), (4112, 4769)]