19723795

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{647}}^1$

素因数の和:739

約数の個数: 32

約数和(自身を含む): 29611008

約数和(自身を除く): 9887213

約数列:

[1, 5, 7, 13, 35, 65, 67, 91, 335, 455, 469, 647, 871, 2345, 3235, 4355, 4529, 6097, 8411, 22645, 30485, 42055, 43349, 58877, 216745, 294385, 303443, 563537, 1517215, 2817685, 3944759, 19723795]

約数ペア:

[(1, 19723795), (5, 3944759), (7, 2817685), (13, 1517215), (35, 563537), (65, 303443), (67, 294385), (91, 216745), (335, 58877), (455, 43349), (469, 42055), (647, 30485), (871, 22645), (2345, 8411), (3235, 6097), (4355, 4529)]